There was no reward for it, which should be in the reward section, but a red quest with the word "Failure" written on it.
[Main quest].
Questable character: Kim Ha-jun
Description:Successfully graduate from the Rokia Academy with your friends.
● Han-Si-Young (Pending).
● Anna-Elizabeth Hartzell (Pending).
● Haruna-Ruel (Pending).
● Liam Martel (Pending)
Failure: Death.
At the moment of seeing it.
(…)
Ha-Jun had to acknowledge that he got fuc*ked.