All the moments of his life, sad and happiness could not compensate for how it was to end. Years of living whittled down to a trail of scrappy body parts inside a stomach of a beast. He had no thoughts. No memories. No pictures of better times to steer him through his final moments.

Jinwoo was sure that a ghost possessed Mino's body, because there is no way Mino would doing this to him, no, not in a million way.  

The end of Mino's sanity happened when he learned that things aren't always what they seem. Or after witnesses a very lovey dovey acts between his mat-favorite-hyung and his other weird one.