Kiss & White Lily for My Dearest Girl

What a fantastic manga this one was, seeing their relationship grow and develop, seeing them both change to become better people throughout the series, and watching the relationships of their friends and classmates develop as well, honestly incredible. Definitely give it a read if you get the chance.

https://anilist.co/manga/86235/Kiss--White-Lily-for-My-Dearest-Girl/