
Wow, did Yoshiki basically ruin the life of every girl that Tsukasa use to date? What a douchebag, shouldn’t that (biting multiple omega’s nape) be illegal in the omegaverse world?

Depends on the author's take on omegaverse.
Usually once an alpha and omega pair , they are only able to have intercourse with eachother and if they try it with anyone else there are side effects. However, it seems that this omegaverse is a bit different in that aspect. What yoshiki did was terrible. Can't imagine what the victims went through back then. If anything, maybe it's only the omegas who, once their nape is bitten, can only have intercourse with their paired alpha.

I feel like the oldest brother likes the mc, his reactions seem to convey that. Additionally, regarding the mc’s wedding, he refused to walk down the aisle with her and also went to see her when she was trying on her wedding dress. I wonder if my theory is correct...Well it might just be a sister complex

Me too leaf, I like his face too. Especially long haired Ikemens.
http://www.mangago.zone/read-manga/no_way_my_best_actress_wife/uu/mpn_chapter-2206771/pg-38/

That second story tho..What was going on?? Seemed kinda dark compared to the first story.
SPOILER
I assume the guy got plastic surgery to look like his crush then when he was having intercourse with some stranger he had the impression that he was doing it with his crush? Idk. Guess I wait for that story to be translated.
Come on, when is this arc going to be completed, if this takes another 20 chapters, I swear-