destroying a character (frequently the second lead) just to give incentive to the readers to root for a particular character (case in point: the main love interest); especially if the so-called second-lead is so much more interesting as a character than the main one.
e.g. the second lead used to be kind, gentle, always by the protagonist's side, ...... reply
did school is stressful
want to do i cant study for fuck's sake
