Muromi, the protagonist of the manga, is a mermaid who speaks with a distinct Hakata dialect and loves sea water fish, sweets, and sake. Although she looks like a teenage girl with a fishtail, she has supposedly been alive for thousands of years. Join Muromi on her adventures as she gets ensnared in the fishing nets of high schooler Takuro Mukojima, reconnects with old friends and makes new ones, and engages in entertaining and unconventional conversations. Alternatively, watch her humorous endeavors to disturb Takuro's fishing expeditions with her witty remarks.
