The Borderlands

Gu Tae-yoon, a climbing athlete, is popular for his cheerful and carefree personality, but inside, he is filled with depression and a craving for affection stemming from the pain of being an orphan. Then, Kang Yi-jin appears, showing him tender affection. A former boxer, Kang Yi-jin had been secretly in love with Gu Tae-yoon, and the two live like brothers as Yi-jin accepts and supports him, allowing Tae-yoon to lean on him. While moving toward their shared goal of becoming national athletes, their relationship begins to unravel after an unexpected accident occurs, and Kang Yi-jin is injured in Tae-yoon's stead. Eventually, to escape Gu Tae-yoon—who has begun to show him a twisted kind of a...