Responses
Big Bro care for lil bro and have been protecting him from the boomer father since young.
The father was so greedy that he faked that Seme's father did bad things and caused Seme's whole family ruined.
Big bro wanted lil bro (Uke) to keep being happy especially finally he found someone he love.
And it was Big bro who made Uke realised that he love the Seme.

Is older brother chill?? Or is he “I’ll pretend i’m on your side but secretly plan on killing you for revenge” type of shit (〜 ̄△ ̄)〜