Mirei, the eldest daughter of the Waba family, was raised under strict education. She had her first experience at 1● years old and blossomed sexually with a man she met at a university mixer. However, that boyfriend left her at the same time as her father's business debt, breaking Mirei's heart. The Waba household was on the brink of bankruptcy when a land-rich upstart, Aiwara, proposed a loan. In return, Mirei would marry Aiwara's heir. Agreeing to this, Mirei heads to an old mansion with the head of the Aiwara family for a certain ritual…
