Synopsis

Kai is an ordinary high school student, going through the ups and downs of teenage life. Unfortunately, he experienced a heart-wrenching betrayal from his childhood sweetheart and closest friend, leaving him feeling hurt and isolated from others. For years, he carried this pain deep in his heart, keeping himself distant from everyone around him. However, everything changed when an unexpected and exciting event unfolded before his eyes - a mystical transparent window appeared right in front of him!

Do you want to steal (conquer) the woman you desire?

[Yes / No]

The moment Kai clicked the [Yes] button, his life, which had stood still, instantly began to surge forward towards his own exciting destiny.
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Warning! Adult content.

This book is rated R-18, so if you're not yet 18, yes, please, you should know what to do.

There's no NTR in here, but the MC will cuckold or steal someone else's. However, it is only for those who deserve it or not? maybe? (v^_^).