NEED HELP: trapped in forbidden tome: the day it came

[Landau]

Hey guys it's me again. I'm new to the game so forgive me if I made any silly mistake here. I seem to be stuck at a puzzle and could not get out. Sincere appreciations if anyone could help.

I found a book called " forbidden tome: the day it came", and I opened it and got teleported to a classroom where an alien advisor is teaching some people about entropy magic. I passed the first few lessons and last one is about to create a bond between you and target and try to kill yourself to pass that death destiny to the target. I tried to suicide by casting self-damaged skills after creating the bond but not working. Then I don't know what to do and just kill other classmates and thought that can unlock something. But no. Now I'm totally trapped there: i don't know how to finish the lesson or kill myself to be teleported to see the death. I don't know what to do, can any one gives some advice? Thanks in advance!

[Landau]

I know it now! I need to cast damage skill to myself!