
It's good but... 1- the SA at first was so uncalled 2- i love isekai but while knowing they didn't die irl (yet?) And have intimacy with NPC hold me a bit. Unlike some isekai where the MC die and is totally involved with the new environment or MC interact with other irl players this one is about the MC and a NPC so it feels like he's falling for a bot idk... Correct me if I'm wrong and the Duke was someone that exist irl. I like the story but I feel sad for the Mc bc if he return to the real world after "finishing" the game, won't he end up alone? I want to keep reading but there's something that make it differ from other isekai and a bit destabilizing

This seems to be the type of story where the npc are actually real people in another world, which is why it's isekai.
That said, the MC had no way of knowing this when he started. It's really sad but he was looking for love from what he thought it was AI. And I guess he thinks he pas regected by AI as well. I wonder if he already thinks they might be real people now that he and everyone is stuck inside the game.
My guess is he still doesn't think they are truly real and treats them like they are because he hopes to be loved.
I also guess he isn't going back to his original world because in this type of story, people who have nothing to tie them back never go back. Most don't even try to go back.

Does anyone know a bl/shonen ai with similar artstyle? with masc character like the ML if possible (like twinks but i think im into bears rn lmao)

I wish there were more hairy men in more mangas/manhwas in general lol Here are some hairy men in BL though. I recomend looking up Hairy in the tags though it'll give you more.
Midnight Rain https://www.mangago.zone/read-manga/midnight_rain_ctk/
Hige to Munage no Taiikukyoushi https://www.mangago.zone/recommend-manga/hige_to_munage_no_taiikukyoushi/
Otokogoro to Mune to Jouso https://www.mangago.zone/read-manga/otokogoro_to_mune_to_jouso/

Like bara or only hairy charas? You could check authors like Mentaiko, IKE Reibun, Ppatta, Haiki and Gengoroh Tagame, and it's late so can't remember anything else that's more specific but here it goes:
https://www.mangago.zone/read-manga/bi_no_kyoujin_smoke/
https://www.mangago.zone/read-manga/hourou_inu_to_mayoi_neko/
https://www.mangago.zone/read-manga/liebling/

Loving all of this but am I the only one feeling like it's a compilation of side story and there is no Plot A that much?

The main couple already realized their love, and it doesn't seem like they're going to drag us through a ton of misunderstandings like many other manhwa. So the only real tension left is the build up to the villain's big plot to ruin MC's life. And on the way there we are being treated to nice side stories. I've not seen this pacing in another manhwa that I have read before, I kind of like the idea. Though the "aawwe that's so sweet-wait... it's that bastard again

This made me remember of bullying and teacher abuse in my country. That one teacher made the entire class kneel outside for a day for unknown reason and then slapped random students. Personally when other student tried to bully me for being gay, I didn't worry. I beat up one of them and it stopped. But the teacher was the scary one. It infuriates me when they think they have the right to do wtv they want with us. It's usually the men too. My mom is a college lecturer and when i attended her classroom, she had authority without scaring them. But the men....
I hope beta didn't become an omega bc it will give the alpha asshole an excuse to justify his need to be with him. Beta deserves better. Fuck that omega "friend", fuck that alpha mf. FREE BETA
Thankfully since the alpha already imprinted or self marked the omega if the beta turns omega the alpha can never go near him
please let this happen omg i need that fucker out of his LIFE
not rallying for the cliche transformation into omega either but it would be so great to see alpha and mc never be able to be in the same room again (i hate him)
Trust me I wrote this entire long response to this manhua how the alpha is truly a peace of shit. While the omega made a conscious mistake drugging the beta he did it because he knows how immature and stupid the alpha is