Binetsu: Yakusoku no Toki

A young woman named Yuki finds herself bound by a promise made years ago to a man she barely remembers. Now a college student, she is unexpectedly summoned to fulfill that pledge, which demands she become the lover of a wealthy and enigmatic figure. Struggling with her own feelings of confusion and resistance, Yuki is drawn into a world of luxury and hidden desires, where her autonomy is constantly tested.

As she spends more time with her mysterious benefactor, Yuki discovers that the arrangement is far more complex than a simple exchange. Dark secrets from the past begin to surface, revealing a tangled web of betrayal, longing, and unspoken truths. Torn between her growing attraction and the need to reclaim her freedom, Yuki must decide whether to honor the promise or break free from the chains of obligation, knowing that either choice will come at a great cost.