"Um... how long do you think you can hold out?"

Suzumura-kun confessed his feelings to Mio, a busty senior in the same track and field club, but was rejected because she wanted to focus on club activities.

However, Mio has now said that she only wants someone to "vent her frustrations" with!?

He was willing to accept the role if it meant he could have a sexual relationship with his crush, but the condition was that he "be serviced and refrain from ejaculating for a certain period of time"...
After she gave him a handjob and he ejaculated in less than a minute, he decided to train.

On the day of his revenge,
will he be able to hold out in front of Mio's voluptuous, tanned, bare breasts?