Suika-chan suddenly decided to come to Kappa no Tani for a visit. Nitori-chan, who has been off the job since the end of her research and development work, is assigned to take care of Suika-chan. In order to keep Suika-chan in a good mood, Nitori-chan has to meet her various demands and endure her power harassment.

Suika-chan suddenly decided to come to Kappa no Tani for a visit. Nitori-chan, who has been off the job since the end of her research and development work, is assigned to take care of Suika-chan. In order to keep Suika-chan in a good mood, Nitori-chan has to meet her various demands and endure her power harassment.