Responses
i haven't read heesu in class 2 so idk how similar these are to it but here u go:
https://www.mangago.zone/read-manga/star_x_fanboy/
https://www.mangago.zone/read-manga/tonari_no_metaller_san/
Something like Heesu in class 2 for example. Something cute, to give me butterflies and a good mood. Angst here and there is fine as well, if everything goes well all the time it gets boring