Currently available on 1 streaming service.

Streaming, rent, or buy Merman in My Tub – Season 1:

Currently you are able to watch "Merman in My Tub - Season 1" streaming on Crunchyroll.

Cast

Nobunaga Shimazaki
Tatsumi (voice)
Yuuichirou Umehara
Wakasa (voice)
Yoshihisa Kawahara
Ahiru-chan (voice)
Ibuki Kido
Kasumi (voice)
Kenjiro Tsuda
Maki (voice)
Natsuki Hanae
Mikuni (voice)
Tatsuhisa Suzuki
Takasu (voice)