My mother's best friend Ririka came to visit. Kotaro ends up talking to Ririka while her mother prepares for her drinking party. His beautiful face, his long and supple limbs on his chest that carves a deep cleavage... Kotaro desperately endures not to be swallowed by the calm adult sex appeal, but finally he can not stand it and has a naughty delusion about Ririka as a side dish. In addition, Ririka sees the penis that has completely erected.
