|Physical and Vital Statistics|
|Manga||Volume 1 Chapter 1|
Tatsumi is the main character who found a merman called Wakasa lying close to the river and is now taking care of him in his own house.
Tatsumi is a nice, selfless guy and isn’t particularly concerned about his new free-loader. Although he isn't happy about the larger water and gas bills. He is a frugal and it’s not cheap keeping a merman supplied with fresh, warm water.
Tatsumi has messy black hair, and tired golden eyes. He is tall and is shown to have a quite muscular body.
- His hair freaks out in humidity.
- He has a bad back from often sleeping in the bathroom.
- He is often reminded of sea food dishes when around Wakasa and friends.
- His favorite food is steamed crab, second being octopus.
- He has great upper body strength.
- Wakasa's scales often stick to his clothing.
- He works at a relative's alcohol store.
- He is popular among older women.
- He occasionally breaks the third wall.
- He hates slime.
- His name come from the "Kuzuryu" river.