Takarakuji de 3-oku Yen Atattanode Himo Bishoujo Kai Hajimemashita

Hino Mariya is an unremarkable office worker whose mundane routine is shattered by a stroke of extraordinary luck. On a whim, she purchases a lottery ticket and ends up winning the grand prize—a staggering three hundred million yen. Overnight, her financial struggles vanish, leaving her daydreaming about how to spend her massive windfall and completely transform her life. However, her newfound fortune quickly invites unexpected complications. While lost in thought about her future, Mariya carelessly drops her bankbook. It is retrieved by Tenma Tsujido, a strikingly beautiful young woman who seizes the opportunity to make a highly unusual proposition. Rather than simply returning the lost item, Tsujido offers a trade: she will give back the bankbook only if Mariya agrees to become her sugar mommy. Suddenly thrust into a bizarre arrangement, the newly wealthy office lady finds that her dream of a lavish new lifestyle has taken a strange and unforeseen turn.