Looking for these mangas

I've been looking for these mangas for literally the longest.

1st: So it's like this highschool couple and it's Bl. One had white hair and was a lone wolf in school and got in a lot of fights. The other one was like super loud and had that classic hairstyle when it's a cilender pointed to the front. And they freak after the second one says he wants to be friends. And eventually they start dating.

And I remember in one of the chapters the white haired one was lactating because the other dude played with his nipples so much and they ended up doing it in school.

2nd: The trope was like young bottom x Old top. The young one was like a young adult trouble maker with blond hair and he started liking the old dude first. The old dude is a normal worker with black hair. And the young one is the reason they started dating.

And I only remember one chapter, and it was like every time they were about to do it, the old dude had work.

Please help me find these! ╥﹏╥