A strange girl dressed like a nun appears before Yōta Narukami and declares she is an omniscient god; as he attempts to return her to her house, she endeavors to prove her power to him.

Yota brings Hina to his house; Hina hatches a variety of schemes to help Yota get closer to Izanami; Yota helps his sister with a summer assignment.

Sora wakes up and tells her family about her friend's failing ramen restaurant; Hina hatches a plan to save it.

Hina finds out about Yota's celebrity crush; if Yota can execute Hina's latest scheme, he may have a once-in-a-lifetime experience.

While studying with Izanami at the library, Yota learns of trouble in the Izanami family; he and Hina want to help, but the issue is so great it looks like magic will be required to solve it.

Yota wants to study, but Hina is dying to go to the summer festival; Yota calls together the members of their motley crew to make summer memories.