
It kept on nagging my brain coz I swear their expressions reminded me of some other manhwa and I finally remembered. It was this.
https://www.mangago.zone/read-manga/my_school_life_pretending_to_be_a_worthless_person/

What irks me is that Tomoe's mom knew he was such a soft-hearted kid. Without her around, he's the only one left in that household who has a heart. I also don't know what's wrong with his bro. He could be dealing with some resentment towards Tomoe since he seemed like such a Mama's boy. He probably never got the same treatment from his mom.
OR, maybe he's just a douchebag. Plain and simple.
That 3rd story though was too short