Anime Crossover: Huh? Is My Girlfriend Really Going to Be Classmate Katsura?

[Anime Crossover + Mostly Slice of Life + Romance + Yandere + Self-Indulgent + No System + One Female Lead, or maybe multiple female leads? Probably? Perhaps I might get stabbed?]

(*σ´∀`)σ

My surname is Ito, but my given name isn't Makoto. My given name is Kazuma, but my surname isn't Sato!

So I'm Ito Kazuma!

I know your expression might get a little weird after I introduce myself by name, but I solemnly swear I don't... Ahem, that's not what I meant.

I hereby solemnly declare: I am a law-abiding, faithful, universally beloved, flower-blooming wherever I go... (several thousand words later) model student!

Maybe there are a few too many things to complain about...

But I'm absolutely not a scumbag or a pervert. Those two labels have nothing to do with me! (You’re looking at me through biased glasses.)

After being reborn and coming to this world, I meant to take it easy and coast through life. If danger came, I'd run; if there was juicy gossip, I'd go watch.

But today, it was time for kind, warmhearted, good-natured me... (several thousand words later) to play the hero!

A mishap on the train brought out the dashing, charming me. I stepped forward to protect a girl,

and in a moment of crisis, she came to my aid in turn. From then on, I became her one and only best friend.

It's just...

After I encouraged her and cheered her up, the way she looked at me whenever I chatted normally with other girls started to seem a little more and more... off.

Huh? Why are your eyes so red?

Huh? What's that you're holding behind your back with both hands?

Wait, no, something's wrong! Σ(ŎдŎ|||)ﾉﾉ Help!!!