Okay, here is the C1-level English translation of the provided text, maintaining the core elements and narrative flow:
Professor Charles and my Aunt Yui got to their feet. "Quickly, run to the Safe Zone!" Professor Charles commanded in a stern tone. We all began to follow them. As we sprinted towards the safe zone, I glanced out through the building's large windows; fires had broken out in two locations, people were rushing towards the safe zone, and in the sky, there were two Hovercopters belonging to the attackers, with members of their group below. Suddenly, three assailants burst in through the large window behind us. Aunt Yui and Professor Charles stopped.
Aunt Yui looked back at me. "Berwick! Charles and I will handle this! You get the others to the safe zone!"
I glanced between my aunt and the group members. There was no time for worry; we needed to remain composed. Besides, unlike my father, my aunt, though appearing like an ordinary professor, is an expert in 'Psychic Magic'. Professor Charles is also a renowned former Sword Master. Yes, what did you expect? A normal slice-of-life series?
My Aunt Yui immobilized all three attackers in place. Meanwhile, Professor Charles, with agile and precise hand movements, knocked out all three assailants.
We continued running, but Lisa must have tired; she fell slightly behind the group. I signaled the others to go on.
Lisa tried to catch her breath where she stood. "I... Huff... I'll catch up, you go..."
"Don't be stupid!" Making a sudden decision, fueled by adrenaline, I hoisted Lisa onto my back and started running.
Lisa, embarrassed, began hitting my back. "W-What are you doing! Let me go, h-hey! My skirt is too short! My panties will show!!"
Her hitting made me stumble slightly, but I recovered. "Stop hitting me, you idiot! Even though you're older than me, sometimes you act like an 8-year-old child is running your brain. Is this really the time for skirts and panties?! They're raiding us, raiding! Besides, if it's so short, why did you wear it?!"
Lisa shouted, angry and embarrassed, "IDIOTWICK!! YOU TRULY ARE THE KING OF IDIOTS!!" She continued her childish antics on my back. After a while, I started getting tired and put her down; we were already close to the safe zone, just around the corner.
I started panting. "Huff… you're quite heavy, yo-" Before I could finish my sentence, Lisa kicked me hard on the hip, knocking me to the ground.
She looked at me, pouting and angry. "Learn how to talk to women first, you moron!" She looked at me again; I was still lying on the ground. But suddenly, her expression softened, and she extended her hand to me, a slight blush on her face.
"Uh, it didn't hurt, did it?" I slowly took her hand; it felt warmer than usual. I stood up and brushed myself off. Lisa was still looking at me shyly, her face flushed.
"I'm grateful you carried me. I don't think anyone else would have done that… also," She clasped her hands together at her stomach level and fidgeted. "Did you see?"
With a puzzled expression, "Huh? See what?"
Then it dawned on me. But since I'm not a pervert or creep, of course, I didn't do something like that. I mean, all I saw was the marble floor, the large windows, Lisa's back, and white striped— Ahem.
Looking at Lisa confidently and seriously, "I didn't see, don't worry. I wouldn't do something like that!"
Lisa nodded gently. "I understand.."
"Come on, let's go. The safe zone is just around this corner." Lisa nodded again. Just as we turned the corner—
"BERWICK, WATCH OUT!"
The moment I heard that voice, I felt a slight warmth and wetness on my left shoulder, followed, of course, by a sudden jolt of pain. I'd been shot in the shoulder, but I had to keep running with Lisa. I pushed her from behind into the safe zone. Just as I was about to enter myself, this time I was shot in the right leg, stumbling and falling to the ground. "BERWICK!!!!!"
"AAARRRGHH!! THAT HURT, YOU BASTARD!"
Xilonen grabbed my shoulder, and together with Shu, they pulled me into the safe zone and sealed the door. Not even an atomic bomb could open this door now.
Lisa quickly composed herself. "Lay him down! I'll tend to his wounds!"
They gently laid me on the ground. Lisa had apparently been studying Healing and Light magic since childhood and was born with a sacred healing rune. So much so that I heard one of her family friends had lost an arm, and Lisa healed the severed limb in seconds.
I looked slowly at Lisa; her eyes were welling up, but she continued healing. "Tch. The attackers knew what they were doing; they used bullets made from Darkeye Crystals, specifically designed to hinder healing magic! It's going to take a little longer, but don't worry, you won't die."
"Die?" I flashed my foolish grin. "Feels like I just went to paintball; these things can't kill me, hehe— Agh, except for the pain, of course."
Lisa seemed slightly relieved by my words but gave me a mildly annoyed look. "Is this really the time for jokes?"
After a while, Lisa managed to heal me. I slowly got up; truly, there was no trace of pain or wound. I stretched my limbs. "That's really impressive. Thank you, Lisa."
Lisa smiled and nodded. "You're welcome."
Suddenly, the large news panel in the safe zone turned on. The attackers had already breached many areas. Teachers skilled in combat were defending the students. Among them, I saw my aunt and Professor Charles; they had indeed neutralized many attackers, but it looked like their energy was slowly depleting. Just as more attackers were arriving, a gigantic lightning spear pierced through a Hovercopter from the sky.
'Look, could it be them?' 'YES, IT'S THEM! THE GUARDIANS HAVE ARRIVED, EVERYONE!'
Everyone in the safe zone looked excited and overjoyed; cheers erupted suddenly. The Guardians… their full name could be said to be the Multiverse Guardians. The team that brings order to universes, manages and secures the wormholes our train connects to, and explores newly discovered realms. Though, they don't particularly interest me.
The Guardians quickly surrounded the academy and began neutralizing the attackers. Some among them must have been popular, as onlookers shouted their names.
'That's Golden Flower Freya!!' 'Crush them!' 'OMG MY WIFE HAS ARRIVED!' 'What wife, she's my wife!'
A few hours later, they cleared the academy of attackers. The ringleaders put up a bit of a fight, but eventually, they too were neutralized. The sealed door of the safe zone slowly opened, and everyone started pouring out.
A few minutes after getting out, I saw my aunt, and Lisa and I ran towards her. As soon as my aunt saw me, she hugged me tightly. "Berwick! Are you kids okay?"
She was hugging so tightly I felt like my ribs would break. "Y-yes, I'm fine, Auntie, but if you keep… hugging me… I'm not sure I'll stay fine.."
She must have understood, as she slowly released me and noticed the holes in my clothes, instantly becoming worried. "What are these! What happened to you! How did this happen! Did it hurt! Who did this to you! Ohh, what am I going to tell your father now!"
I tried to calm her down. "Hey, hey, calm down, Auntie. I'm fit as a fiddle, besides," I looked at Lisa and gently gestured towards her. "Besides, Lisa took care of me. Look, I'm perfectly fine, even the pain in my back is gone."
Lisa looked a bit proud and slightly surprised, then glanced at the Guardians behind us, checking on other people and arresting the attackers.
Professor Charles spoke up. "Your project is postponed for now, Mr. Berwick. But remember, if you are late this time-"
I shrugged and sighed. "Yeah, yeah, I know, you'll drop me completely." After looking at me seriously, he turned and slowly started walking towards the infirmary. Was this really the time for that conversation, man?!
My aunt also said she was heading to the infirmary and left us. Lisa and I decided to slowly leave the academy and head towards the train station. Lisa slowly walked ahead of me, turned around, and started walking backward, facing me.
"Aren't they incredible? The Guardians… Without them, maybe none of us would be safe and sound right now."
Uninterestedly, "That's their job; they're supposed to do it. Besides, I'd prefer none of this happened. As I said before, I'm content with my peaceful and calm life."
She looked at my face, slightly pouting and annoyed. "I really don't understand how this doesn't interest you. Ah, saving people and caring for them, discovering new universes before anyone else… Doesn't doing these things excite you at all? Both your perspective on travel and this… You really are a strange one..."
I shrugged. "Meh, no. It doesn't excite me."
It genuinely didn't. After all, even if there weren't magical fantasy battles, I've fought plenty of wars in my time. Of course, having a family, friends, and good opportunities now, unlike in my previous life, has softened me a bit, you could say. Previously, if I'd taken those bullets, forget feeling pain, I would have charged right at the attackers…
"Hey, tell me, when you graduate, you'll be one of the youngest graduates from the Academy. What will you do?"
"What's with the sudden question?"
I started thinking as we walked. "Let's see… I mean, I'd like to continue with music; it's something I've dreamed of… What about you?"
She looked up at the sky with a faint smile and continued walking… It was already evening, and the stars were truly putting on a visual feast for us…
"I want to be one of them… I mean, the Guardians. I have healing powers; I need to master Light magic, but I believe I can manage it. I can at least support people in a support team role…"
"I see… Honestly, you'd make a great support."
We arrived at the train station and boarded the last train of the hour. Two hours later, around 10 PM, we returned to our universe and slowly started heading towards our homes. Although our houses are two blocks apart, we walk the same way for half the distance. Lisa remained silent for a while, and I felt I should break the silence.
"Uh, thank you again for healing me today. I couldn't say it properly then, but it really helped a lot…"
A slight blush appeared on Lisa's smiling face. "It was nothing. Besides, if you hadn't protected me back then, maybe I would have taken those wounds. As good as my healing magic is, I can't use it on myself."
I looked at her, a little surprised, and glad I had protected her. When we reached the path split, we looked at each other.
"We'll talk tomorrow, Lisa. Be careful getting home, okay?"
Lisa nodded. Just as I turned my back, Lisa ran up to me and planted a kiss on my cheek. At that moment, my heart was beating like never before, but with a sudden reflex, I took a step back and looked at Lisa, embarrassed. She was embarrassed too. "We'll talk tomorrow…"
She suddenly started running in the direction of her home, while I stood there frozen for a few minutes.
The moment kept replaying in my head like a broken record all the way home. Lisa and me? I'm 16, and she's a beautiful 21-year-old lady… really, me? Among all the people… Ah, forget it. I gave myself a light slap to snap out of it. Sometimes overthinking really wears you out. A few minutes later, I arrived home. I opened the door.
"I'm ho-" Suddenly, Illya ran to me crying and hugged me tightly. Similarly, my sister Yukari and brother Arden came over, looking worried.
"Berwick bro!" "Berwick, little brother! Are you okay?!"
They started checking me over, and I grinned slightly. "Better than ever! Fit as a fiddle! Ahahaha! Ahahahahaa!"
They looked at me with bewildered expressions. Then we went inside. My dad was sitting and playing a game. When he saw me, he stood up and quickly came over.
"Eh, see, fit as a fiddle," My sister punched Dad on the head. "WHAT KIND OF FATHER ARE YOU!" We calmed my sister down. It was an unnecessary reaction, but also kind of justified. I'm really amazed at how calm this man can be.
After my sister calmed down, I explained what happened. They seemed somewhat relieved, but still looked worried. After mentioning that the faculty was taking a week's break, my stomach roared like a lion, ending the conversation. My sister had already prepared delicious food; I ate everything like I was starved. After taking a shower, I went to my room. It had truly been an exhausting day. I threw myself onto the bed and stared at the ceiling. Then my eyes slowly started to close.
'Bzz… Bzz… Bzz…'
When I opened my eyes, it was pitch black around me. I woke up to the vibration of my phone. Looking at my phone, an unknown number was calling me, and the time showed 2:10 AM. Sleepily, I answered the phone.
In a sleepy, yawning tone, "Hello… Who is th-"
Before I could finish my sentence, I heard the anxious voice of a woman. "It's Berwick, isn't it? Please tell me it's you."
Confused and realizing the seriousness of the situation, I sat up in bed. "Yes, this is he. Did something happen? Who is this?"
The woman sounded relieved to have reached me, but her anxiety persisted. "Thank goodness… Uh, I'm Lisandra's mother. I haven't heard from Lisandra, she still hasn't come home. I wanted to ask if she might be staying over at your place."
My blood ran cold as I grasped the situation. How? We had just gotten off the train together, and she had headed towards her home. Almost four hours had passed since then; even though her house was further than mine, she should have been home by now. Her mother started breaking the silence with 'hello, are you there?'… I don't want to worry her mother. It seems I have no choice but to lie until I find her.
"Uh, yes. Don't worry, I protected her during today's incident, thankfully she's unharmed. As soon as she got here, my sister took care of her, she must have been exhausted, she fell asleep right after dinner. As for the phone, she probably listened to so much music that her phone battery died. You don't need to worry. I'll give her a good scolding tomorrow for not letting you know."
Lisa's mother sighed in relief; she seemed to have bought the lie for now. "I see. Thank you so much. Lisandra can be thoughtless sometimes, I hope she hasn't caused you any trouble. Good night, Berwick. I hope you'll visit our home with Lisandra someday."
I forced a slight smile and spoke gently. "She certainly can be. Good night to you too, and thank you for the invitation. I look forward to visiting."
"We do too. Goodbye."
After the call ended, I immediately became serious and quickly started changing my clothes. Lisa… Where could you have disappeared to?