Himeno-kun wa Tokimekitai

Yui Himeno, the oddball of the class, finds his "shounen manga artist who's on the edge of the cliff" side exposed by the class prince, Hinata Ouji! Meanwhile, Ouji harbors a secret of his own: he is a devoted "shoujo manga lover." Tensions rise as Himeno teases him about romantic relationships. However, when the editor who works with Hinata suggests that he try writing shoujo manga, he decides to take the plunge and shouts to Ouji, "Teach me shoujo manga!" From that day on, the two opposites embark on a secret journey of "heart flutter lessons," exploring their different worlds and the budding connection between them!

(Source: Shodensha, translated)