"Because I decided to get all of" your first time "" The fun of the weekend is the spring heart of a dead Arasa woman called one cup at a convenience store. One day, while enjoying the life of a boyfriend pear alone, he was proposed to a childhood friend who grew up like a brother. The lawyer's performance is logical, and since he approaches from above, Haru's heart is not moved at all. Seeing such a spring heart, Kanou proposes to have a "temporary" marriage. The deadline is 3 years, and the marriage (provisional) life begins forcibly. Actually, there is a big obstacle in the relationship between the two ...!? 「必ず惚れさせるから抱かれてみろよ」 恋人ナシ、気楽なお一人ライフを満喫するアラサーの春心は、ある日、兄弟同然に育った幼なじみの奏に求婚をされる。急な告白にとまどう春心を見て、奏は「仮」の結婚をしようと持ちかける。弁護士の奏の有無を言わさない提案に、春心はつい頷いてしまい……。期限は3年、幼なじみの過剰な愛情に翻弄される同居生活が始まる――…！