Chicchai Kanojo Senpai to Douseishimasu.
ちっちゃい彼女先輩と同棲します。
Takase begins working at a real estate firm and meets a small, appealing female coworker, whom he invites on a date. The two eventually start living together and slowly develop a life together. Their relationship progresses until a significant event occurs. This is the concluding part of the Chicchai Senpai series.
