Nega-kun to Poji-chan

Nega Shouya and Hoshi Sayaka are students in the same high school class. Nega consistently holds a very negative outlook, whereas Hoshi is overly positive. Despite being in love with each other, they misunderstand each other's signals—Nega underestimates his feelings and Hoshi overestimates them. Their contrasting personalities are said to follow the principle that opposites attract.