Pidgehardy's activites

There was a BL manga that was adapted into an anime, it contained people with animal characteristics and mpreg that was only viable through inserting a fake uterus into one of the males. Pretty sure it was omegaverse vibes but i'm not totally sure.
Does anyone know what it was? It's quite old now I think but for the life of me I can't remember the name xD

WTF HAPPENED WITH THE BRO? was there incest because the actor guy is MLs type but also looks like the guy he was caught kissing by MC and he also looks like the heeyul actor guy... I NEED MORE DEETS

Edit for further clarification:
1) Seoin kissed brother, main character ran away probably heartbroken.
2) Juwon (seoins dead brother) is haunting main character saying he doesn't belong.
3) Since the brother died Seoin changed, became a devious f*ckboy with violent sexual tendancies (trauma?)
4) There seems to be some sexual tension between main couple but MC has not had sex with a guy before so it was just a crush? with some touchy touchy that never developed because of the dead brother?

Possible options?
1) Dead brother purposely sabotaged main couple for bants - just a nasty ass person. But then why is Seoin traumatised?
2) Seoin was fucking his brother and was always actually always a player? He's the bad guy. (Idk, dont seem right?)
3) Dead brother was obsessed with either Seoin or MC and wanted them for himself. Sabotaged the growing budding romance. (Doesn't explain why Seoins so twisted now?)
4) Seoin was groomed by brother into incestuous relationship but fell in love with MC and wanted out? Bro wasn't happy with this so sabotaged? (its a reach but seems viable?)

Help.