At a dormitory, high schooler Wakana tries to use a summoning book to summon her pet dog...only to unwittingly conjure a perverted unicorn girl who makes an eternal oath with her.
The manga is written and illustrated by Mei Fujimatsu and was serialized in Comic Dengeki Daioh from 2019 to 2020.
The manga provides examples of:
- All Women Are Lustful: The Unicorn, or Satou Uni, is deeply attracted to virgin girls in part having to do with the myth surrounding unicorns.
- Clingy Jealous Girl: Uni becomes this when Mitsuki swifts Wakana away to hang out with her.
- Public Bathhouse Scene: A major plot point in Chapter 1.
- Shrinking Violet: Wakana's character flaw. She is shy and can get easily embarrassed.
- Unicorn: The titular Unicorn, or Uni Satou as she comes to call herself. She's able to take a human form, and is deeply attracted to virgin girls due to the long association of unicorns and virgins.