"I'll show you how scary men are"
The Yakuza brother's heat, kisses, caresses...
I know it's no good. Why can't I refuse even though I have it...?

Yukari Momose, a high school art teacher, says, ``History of not having a boyfriend = age.''
She is about to turn 30, and due to concerns from her parents, she attends a matchmaking party, but
She has a lively conversation with a man of the same generation. First, it was a crushing defeat.
Honestly, I'm not even positive about marriage yet...

Unfortunately, on my way home, I get tangled up with some thugs!
Yakuza dressed in black appear in the nick of time, and Yukari is saved by the young leader.
It was supposed to be the first time I met him, but I felt like I had met him somewhere before...?

The student I met again turned out to be the young head of a yakuza!?
After a doting proposal, they lived together under the same roof♪
「男の怖さ教えてやる」
ヤクザのお兄さんの熱が、キスが、愛撫が…
ダメってわかってるのに、なんで拒めないの…？

高校の美術教師である百瀬由香里は「彼氏いない歴＝年齢」。
30歳も目前、親からの心配もあって婚活パーティーに参加するも、
同世代の男性と会話が弾まず、見事惨敗。
正直、結婚にまだ前向きにもなれなくて…。

そんな帰り道、運悪くチンピラに絡まれてしまう！
間一髪で黒ずくめのヤクザ達が現れ、その若頭に助けられた由香里。
彼とは初対面のはずなのに、どこかで会ったことがある気がして――？

再会した教え子は、ヤクザの若頭でした!?
溺愛プロポーズのち、ひとつ屋根の下あまあま仮結婚ライフ♪