[Rikka-tan's super cute no-makeup face is revealed for the first time!] A new life! After missing the last train at her new part-time job, college student Rikka heads to the house of a childhood friend who lives nearby! After a bath, her younger sister's grown breasts and panties are exposed in her loungewear, and her childhood friend gets aroused...! Their feelings for each other over the past decade come true, and they have a passionate, lovey-dovey sex session that gets them excited to the max! They take a bath together for the first time since they were kids! They have sex again in the morning! Their uncontrollable sexual desires keep them going all night long...!