This link
https://ranforchu.com/
This what I remember
1st time: when the MC stole his things in the first chapter.
2nd time: MC was cleaning his room and took the ML mother's hairpin by curiosity. The ML saw him and almost cut his neck. He slightly cut hit but still.
3rd time: MC ran away, he got into a boat and the ML started shooting him from the shore, but no bullet touched him. (He said he missed on purpose but the bullets grazed MC's head, the logic??)
4th time: After ML rescued him from the Yokai kidnapping. He r**p*d him so bad for days, MC got very weak.

Novel is similar to toxin and paper flower, but this ML is a tad likeable, not like a madman like the others. He treats the MC well most of the time, except when he ran away.
The MC is just an unfortunate soul who is a victim and had bad luck, he actually did nothing, just stayed there and all the problems came to him.
The ML is red flag
Yes, he is a psychopath
Yes, he commits genocide
Yes, he kills 2 likeable characters. I cried so much. Or maybe he didn’t? Lol spoiler
Yes he r.. p.. the MC after he ran away.
Yes, he is a bad person.
He tried to kill the MC more than once.
Most of the time he protects the MC. At least the first half of the novel, he is kind of normal, respects the mc and asks for his consent, talks harshly but if I have to compare him with other black flag MLs, probably he is the lesser black flag.
I recommend the novel, I wasn’t as angry as I thought I would be or maybe I just dissociated.
Or maybe reading the novel To my Dear horror, put the rest of the MLs in a better ranking.
At least the little fox pet survives and is happy