First chapters are about Grim (a radio host) and Masachika (an actor, son of the producer guy with the glasses who’s the mom and the model with long black hair who’s the dad). Second story was about Naochika, big brother of Masachika (but only related on their mother’s side) and his husband. Third story is Masachika’s and Naochika’s parents when they were younger
The family tree: (if you can’t see it, it’s a the end of ch 6 of this manga)
https://iweb18.mangapicgallery.com/r/newpiclink/koubutsu_ha_mayonakano_uchini_haranonaka/6/eed0d58e5c3f3004240e2472e9239e53.jpeg
I'm so confused are these the child or the parents and of who?