Katsuki has a major problem. The biggest problem hes ever faced. Hes in love with his middle school homeroom teacher. He doesn't think anything really bad, but he knows that other people his age definitely don't feel the same way. First off, it's not like his teacher isn't sought after by the other girls in his class, and even girls in other classes. But since he's.. Not a girl, people would lose their shit even harder. But he's content with just watching him, following him and taking some of his things.

 Katsuki looks at the second-floor window of his house. Izuku Midoriya, early graduate of his class, started teaching at the age of 18 under special circumstances, now a full-fledged adult living on his own. Thats one of the things Katsuki loves about him, hes smart. Smarter than anyone Katsuki has ever met. Katsuki didn't find any sign of a partner or other person living in the house during his entire search of the place, and now after months of sneaking, he now knows the house inside and out. 

Climbing onto the windowsill at one of the windows, Katsuki holds onto one of the strong branches of a thick tree in the backyard. He swings his body and with all his strength he flips and is now on the windowsill. Katsuki prides himself on being good at a lot of things. The tree shakes with the force of his body, and he holds his breath. 

One...Two..Three..

He counts down the seconds until the tree stops and until a good five-minute pass, just to be sure Izuku doesn't come to check outside the window because of the noise. Katsuki takes a deep breath in, then continues climbing the tree up to the second-floor window leading to a hallway. Katsuki silently thanks whatever God out there that Izuku let his tree grow big enough to support katsuki and tall enough to reach the second floor. Katsuki stands on the ledge of the window and then opens the window, smirking to himself. 

Izuku never locks this window, who's going to be able to break in from the second floor? Katsuki slowly climbs into the house his footsteps soft and practiced. Hes a pro at breaking into his nerd's house. Looking around the cozy and clean hall, examining the photos hung on the walls to Izuku grinning with friends to looking grim and emotionless in family photos. Katsuki slowly goes to Izuku's room and listens to the sound of the shower running. 

The bathroom is connected to the bedroom, so Izuku will have to make a noise that katsuki would definitely hear, giving him enough time to make a fast, clean exit. Katsuki looks around Izuku's room, an All Might poster hanging on the wall with a bookcase filled with notebooks full of hero info and hero figures. Katsuki always wondered why Izuku never became a hero, he's sure he has an amazing quirk. Katsuki goes to the bookcase and pulls out a yearbook.