I really want to know Leon's backstory. He's a shithead and an annoying asshole of a chara...

I really want to know Leon's backstory. He's a shithead and an annoying asshole of a character but there are moments where I think there is more to him than what we get at face value.
I feel like he's maybe a lil jealous of Ikumi. The boy has friends and a lover who care deeply for him but Leon doesn't have that. Leon never had a Chiharu in his life and during the 'try to fuck Chiharu arc', I feel he wanted ruin Ikumi. 'How could someone who totally rejects their gender, live better than me? Imma sabotage his relationships to show him that this is the only way we can live.'
((Might be a stretch but imma still put it out there bc this just be the vibe I feel. Maybe I'm overanalyzing it (probs lmfao))

Someone else said smth along the lines of, he grew up with trash so he acts like trash and I think that that's true. He devalues himself because that's what everyone has most likely told him his whole life and he's fully believed it.

His character is very similar to the "promiscuous" omega males in ABO verses where they use sex to get what they want. Everyone criticizes them and tells them to value themselves more but how can they when society literally sees their gender as nothing more than a bitch to fuck? How can you believe you matter when the majority says you don't?

Anywho, not to say Leon doesn't suck (he do.) He's a frustrating character who is annoying as all hell and I really hated him in the beginning but he's grown on me. He's an interesting character and I wanna know more about him.
Also I will RIOT if the author doesn't have a good backstory planned out for him and just makes his character be like that bc it be like that. If so, that's a damn good wasted opportunity right fuckin there.

I wanna see Leon cry because someone tells him he's a human being who is more than his sexual organs and also for him to fall in love. I want him to fall in genuine love and cry because he doesnt know how......(I spent like 10 minutes trying to find the correct type of love that wasnt eros since Leon only knows sex but not love but I'm tired af and idk where I was really going with this)

TL;DR
I wanna know Leon's backstory. Also got sidetracked so lost steam towards the end
(￣∇￣")