Hamubane / Aonoshita

A confusion made in childhood leads to a surprising yet beautiful relationship in this sweet romance manga. Shuichi and Yuika have been close friends since they were kids. But Shuichi had always thought Yuika was a boy, so their reunion 10 years ago was filled with surprise when Yuika had seemingly transformed into a beautiful young woman! Intimidated by his friend’s beauty, Shuichi was sure this would be the end of their friendship. And it was… because the two traded in friendship for marriage! A sweet and charming love story about finding friendship and love with your person. (Source: Seven Seas Entertainment)

Kiri, a summoned hero, has acquired amazing strength as a result of 300 years of training out of caution. In order to return to his original world, he has taken Eimu, a naive girl who is the daughter of the "Demon King," as his apprentice to train her to become the most powerful along with the addition of May to train, a beautiful sword princess who has her very own problems, Kiri begins a journey where they will do whatever they want, no matter what kind of monsters they face in their path .

Shojin Sui is just an ordinary high school sophomore. One day, he's shocked when a cute girl in the street suddenly says to him, "Let me kill you." Even more shocking, that girl turns out to be a "grim reaper"!? With a big appetite and a cute Grim Reaper girl, along with her unique classmates and underclassmen, Sui's slightly dangerous and boisterous days begin.