Nao and Nono decided when they were very little that someday they would get married and told everyone about it. But some people have a problem with the fact that despite how feminine Nono looks and acts, they’re both actually boys…

Yuu, who was like a hero at school because of his speed, has his ife completely changed by a prolonged hospitalization. Initially, classmates who came to visit gradually stop showing up, plunging him into the depths of despair. Despite being in despair, one day during an examination, Yuu suddenly time travels back to the primitive era... where wild action in a new world is depicted. (Source: Natalie, translated)

A story about an elementary school girl who finds an older brother in Gashapon machine (toy vending machine).