Love is the Number of Keys

愛は鍵の数だけ… 風俗マンション

Ai wa Kagi no Kazu Dake... Fuuzoku Mansion

Jyun is on his own for the first time as his father has gone overseas for a new job. He stays behind because of schooling and moves into an appartment complex as assistant manager only to discover the place is a sex service appartment.