Immediately engaging in double adultery with a senior's wife; meeting and having sex with the best affair partner within the permitted timeframe; Shiraki Yuko VEC-556

The moment they met, they shared a passionate kiss, almost too intense to wait. Then they rushed to bed and made love. The ultimate mistress, driving life to madness, was Natsu, the senior's wife, with whom he continued their clandestine rendezvous despite being married... No need for romance, just wanting to indulge in carnal desire...