Good manga, and I enjoy the MC, but the FMC is a piece of sht.
Subjected one of her "friends" to getting beat up and their money stolen so that she could possibly get 100,000 won, and even though the MC loves her and she knows that if she brings the MC to the delinquents he'll get beat up and possibly killed but does it so that her mom doesn't yell at her?
The ship had a more tragic fate than the Titanic, girl literally causes so much pain and her likability crashes when you realize she isn't a pure, honest girl who tries protecting others, she's a selfish little btch who doesn't want mommy yelling at her.
Edit: Also wanted to let the delinquents who beat MC up have her way with her in order to "atone for her sins?"
Idk girl maybe its time to add a brain inside that skull of yours.