Hatsushiba Akira, an awkward senior highschool boy, has a strong crush on classmate Sakuraba Yurika. But when he gets close to her he always says or does something stupid.
At the suggestion of his best friend, Kikuchi, Akira enters the GachaGacha machine to play a game, but the machine fritzes out and malfunctions. That night he sneezes while going to bed, and when he wakes up he looks like the female avatar he saw in the GachaX2. He soon learns that sneezing will change him back and forth from his normal self to a female form. As a girl, Akira-chan is able to get close to Sakuraba and become her friend.
After being greeted by his hungover mother in the morning, Ryuuji goes to school and is happy to find that he gets to be in the same class as his best friend, Yūsuke Kitamura, and crush, Minori Kushieda. However, it is then that he unexpectedly knocks into "the school's most dangerous animal of the highest risk level" — Taiga Aisaka — who just happens to also be in his class.
