Du Myeongui Sion

Dae-Ho has a crush on his friend 'Si-On' and decides to be courageous and confess to him, but Si-On sneers at Dae-Ho's confession, which leads to the start of a violent relationship

After being hurt by Si-On, Dae-Ho feels devastated by the book that encouraged him to confess... But right at that moment, a strange light emanates from the book and takes Dae-Ho to another world.

(Source: BOMTOON, translated)

Note: Chapter count includes 6 extras.