One morning, Tokumitsu Shintaro finds a strange girl asleep on his balcony. She seems nice, but she also claims that she's an angel and that she has nowhere to go...

Towa and Shintaro start settling into life sharing the apartment, but they have a lot to learn about living together. Still, they begin to find a rhythm before Shintaro has to return to school and insists that Towa can't follow him.

Shintaro has racked up a few explanations he needs to make at school, while blissfully unaware of it! And at work, his girl troubles escalate as he runs into an ice queen.

Will Shintaro manage to explain Towa to his friends, old and new? And how will the dynamics change in school and at work?

Tsumugi sees the two girls by Shintaro's side and laments her own blandness. Meanwhile, Noel and Shintaro finally get the chance to do what they'd agreed to do.

The peaceful cadence of Shintaro and Towa's life is interrupted by a surprise visit from one of Towa's juniors from Heaven. The tiny terror of an angel makes Shintaro reexamine their relationship.