Touch it and it gets hard!

Haein and Dohyun have been childhood friends for 20 years and proudly claim to know each other better than anyone else.
While studying sports rehabilitation, Haein offers to help Dohyun—who's on the baseball team—by loosening up his muscles for practice.
“What could possibly happen?” he thinks… but that illusion quickly fades.
As Haein’s gentle hands work their way over him, that part of Dohyun's body unexpectedly reacts…!