Kim In Sung is a South Korean stage actor. He had a role as 'Young Junichi' in the play 왕복서간 (April 2019), which was a Korean theatrical adaptation of one of the stories in Kanae Minato's 2010 short story collection Ofuku Shokan (往復書簡 / Round Trip Letter).
Han-joon has been in love with his childhood friend, Yoo-jae, for a long time. He knew his feelings wouldn’t be reciprocated, and it didn’t matter because he never even dreamed of confessing to him. But this time, he wanted to express his love....