Pay attention to the contract clauses. (Yaoi)

The following content is intended for mature audiences and may contain sexual themes, gore, violence and/or strong language. Discretion is advised.

Sujong, who has been struggling financially while raising his daughter alone, is offered a part-time job as a test subject for a study conducted by his university junior, Woomin. Drawn in by the high compensation, Sujong signs the contract without properly finding out what the research involves—only to realize too late that his body has been completely changed…
“You suit being the one who gets taken better, senior.”
Shame and pleasure entwine, and at the end of a contract with no escape—

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