Wakasa  

, 若狭

The merman, known as Wakasa, found himself struggling in the murky, contaminated river and decided to seek refuge in Tatsumi's spacious, hygienic bathroom. Despite being unfamiliar with human customs, Wakasa embraced Tatsumi's generosity without hesitation. He was unafraid to indulge in Tatsumi's kindness and let himself be pampered.