Kataomoi x Kataomoi
Chapters 1-3.5: highschool student befriend a classmate to get close to the sister but the classmate thought that he's the romantic interest, shocked when he was just being used but he confessed and slowly they become an item. Chapter 4-5: group of 4 university students, 2 are a pair, 1 of them is messing/ teasing the one they like.
Yoake Ni Furu
Prequel: Yozora no Sumikko de
Danshikoukousei, Hajimeteno
Chapter 1: stalker kohai of a senpai in a club who knew the kohai's feelings and tease him a bit about it. Chapter 2: student council vice president(who's about to graduate with the president) and treasurer who was possessive.
Seishun Kinema
guy who had complex about his small peepee and inverted nipples and a gloomy classmate who helped him.
Yoru Mo Hi Mo Akenai