Kirishima pov
I stood over the sink, scrubbing some dishes. Behind me, Kat and his dad cleared the table. After the meal, Mitsuki opened everyone's presents and cards, including mine. It sent me into a state of nervousness, since what I had wrote in the card was quite personal; yet I was thankful as Mitsuki didn't read mine out loud. Once everyone had left, Kat's parents offered for the two of us to stay round for the night in Kat's old room, which we accepted. We'd be going out the next day to the mall to meet up with our friends; we wanted to all read the magazine together. Whilst drying my hands, I felt a tap on my shoulder, I turned to see Mitsuki, smiling gently at me. "Eijirou, I'd just like to say that the card was really sweet, and you shouldn't be thanking me, I should be thanking you." She placed her hand on my shoulder and kept her voice low, away from the ears of Kat. I thought back to the card, remembering what it said.

Dear Mitsuki,
Have a happy birthday!
I'd just like to say thank you so much for you and Masaru being so kind to me, and fully embracing me and Kat. I'm so grateful that we have two loving parent-figures in our lives and that you made Kat into the amazing boy his is.
From Eijirou x

"As I've said before, Katsuki was shallow and almost emotionless, until you came along. You've really helped him grow and change for the better and we couldn't be more grateful." I then started to notice tears in her eyes. "At one point, we were- we were worried he'd never be able to love or be happy with life and himself, we always thought he'd try to hide his sadness behind all the bragging and cockiness. So thanks for helping him get out of that. We didn't make Kat who he is now, you did." I froze for a moment, just feeling my emotions overwhelm me.
"I- I don't know what to say-"
"You don't need to say anything, okay. Anyways-" she turned to Kat. "You two can head off to your room, we'll finish up down here."

"What a day." I groaned, flopping down onto Kat's double bed, something I had missed since our dorms only had singles. I looked up briefly to look at his room; large with the bed against the back wall, a television on the left above a set of drawers and a desk on the right. Dotted around the room were a few posters, a band called The Tors and an All Might poster that Kat was giving the side eye.
"But you enjoyed it, right?" He asked, still standing up. I smiled and nodded, back still against the red duvet.
"Yeah, it was great getting to meet your family. It seems so nice to have a big one, mine was always small, just the three of us." I said, thinking back to the past. To cut me out my thoughts, I felt the heavy weight of Kat jump on me, cradling my waist with his thighs.
"Well I'll make sure we'll have a big family one day." He smirked at me. "How many kids you thinking, two, three, four?" I was pleasantly surprised at his eagerness, laughing and grabbing his thighs.
"I think I like three, two boys and a girl?"
"Names?" He joked, raising an eyebrow. I thought for a moment, still smiling up at my giddy boyfriend.
"Well ever since the school trip, I like the name Sakura, ooh and for the boys, Taiki and, hmm- Sebastian!" I announced happily, causing Kat to scoff.
"Sebastian, we don't live in fucking England!"
"No, but it's still a cute name, we could call him Seb for short!"
"Oh you really are hopeless Red." He sighed humorously before bending down and capturing my lips with his. He moved into it so effortlessly, working his hands until they found a comfortable position. My fingers ran down his spine, resting on his butt. I never got over at how sensitive and delicate Kat could be with his kissing, a complete oxymoron to his personality; I loved it. Just as I was about to wrap my legs around him, I felt his firm hands on the sides of my stomach; his mouth curved into a smile on top of mine. He broke away slightly.
"Oh you wanna stop-" suddenly I lost all my breathe, as Kat spontaneously began tickling me. "What the-" I was a sucker to it, my body instantly caved in when being tickled. What had put him in such a mood. I laughed loudly, banging on the back of Kat's back, hoping for him to stop. "Get off me!" I giggled.
"What you gonna do about it?" He asked through a sinister smirk. I thought for a moment before realising how dumb I was being.
"This." Then, my quirk was on, hardening my stomach and upper body. When Kat realised, he pulled a face. I took the opportunity to flip him on his back, sitting on top of him to give myself the advantage.
"You bitch." He grunted, grinning at me.
"And what about it." I then went in with my hands, tickling him all over until I found his spot; his neck. I could've guessed since whenever I kissed him there, he always tensed up slightly. I hardened other parts of my body, making myself too heavy to move off him.
"You're- you're cheating!" He yelled through his laughter. I didn't stop though, admiring how cute he was when he smiled and giggled freely.
"You started this with someone who's quirk is hardening, you should've thought about it a bit before first."