|Physical and Vital Statistics|
|Manga||Volume 1, Chapter 7|
Mikuni's body is 99% water, so he readily shrinks and grows. He does not require food or anything besides water. Tatsumi likes Mikuni because he is economical like himself. He is technically neither sex, as stated by the author.
- He has a sweet and clear voice, scoring an 80/100 from Agari by singing "Twinkle Twinkle Little Star" during the Karaoke Battle.
- Tatsumi is very lenient with him.
- He is often mistaken as a ghost. By highschoolers, Tatsumi, and the middle aged man who robbed Tatsumi's house.
- He is partially responsible for making Tatsumi's bath tub explode.
- He is translucent
- Occasionally he splits up into hundreds of tiny Mikunis
- He shrinks without water
- His name comes from a land that has a giant jellyfish problem.