when you eat a sandwich

Fl isekai, fl is a fan of the kid which is supposed to be the original ml(?)
I remember one episode, where the fl gifted a sword to the kid but the uncle/father idk thought it was for him. And she embroidered the kid face into a handkerchief but the father/uncle thought it was his

The fl have pink hair and ml have long hair. It's a manga so it's kind of bnw all the time but sometimes they draw it in colour. And it's ongoing
They're both seems to be perfect on the outside, are really gorgeous and people simp over them. But they're actually wearing a mask. I remember a lot of ribbon (I'm pretty sure the fl wears ribbon)
If i remember it correctly the fl is president? And the ml is the vice president.
I remember one scene when the fl were bothered by groups of boys in train station and the ml come in to save he by saying some not really 'perfect' response (it was intimidating and he is a nice person that likes to smile) this is when the fl realize she likes the ml.
It's confusing but i hope somebody gets which manga I'm relating to.