Comment by Nikolais hat stays on during s** on The Perfect Relationship - Chapter 4

Dad reciprocates Minjae's feelings and they have s** and live happy for one/two days. And because dad is the person Minjae loves most and holds dearest, he commits suicide in front of Minjae and tells him to live a life of misery. Minjae tries to end his life but Taehyun prevents that. Then Minjae decides to fulfil his dad's revenge and live a life of suffering.