The MC's junior sister at medical school apparently always had a crush on him, but is willing to help him search for his ex-GF. He broke up with his ex when his famiy had an accident and his sister became disabled and he dropped out of school, because he didn't want to burden her.

Later on, his NPC advisors pressure him to marry a lot of NPC wives to consolidate his power through the bestowment of an Imperial Edict for marriage, so suddenly, he gets a lot of women shoved at him and he's pretty uncomfortable with it. This makes sense, and going through with it also makes sense, since he's already a burgeoning warlord. Effectively, a large-scale marriage alliance. One NPC girl got pregnant due to an accident plotted by someone else, and he also wants to take responsibility for that.

However... his real-life junior sister also gets thrown into the list of wives, and she's down for it, and the MC's sister is also encouraging him to marry her alongside his other wives. This is while one of the MC's NPC wives, Diaochan, is being materialised into real life, and so the line between the parallel universe 'game' and 'reality' is getting very blurry.

I really had to pause for a while.

The MC marrying dozens of NPC wives & concubines from the 3-kingdoms era is fine, since they grew up with different values and it's largely done for the sake of marriage alliances. But how on earth did the two real-life girls with a real-Earth background accept it so suddenly? At this point, it's obvious that the game isn't just a game. And while I can accept that his mindset changed gradually, since he's been spending most of his time in-game, and that he's resigned to marriage if it's what's best for his territory, his junior sister has spent most of her time in reality.

There's no way her values could possibly take that much of a 180 degree shift from modern monogamy to an exaggerated pseudo-Imperial dynastic harem.

Plus, the MC spends most of his time running around, waging war, managing his territory, and trying to get ahead before his territory gets KO'd, and barely spends any time in reality or in his own in-game harem. The girls basically knew this, and yet one was willing to marry and the other was willing to encourage her to marry. ????????

And after that, MC still tries to search for his ex-GF that he feels bad about, because she dropped out after him and he feels guilty. At first he just wants to know if she's doing well, and convinces himself he'll let go of her if she's not interested, etc., etc. Then he entangles with her as her new employer, and then he realises that the people tracking him IRL coincidentally are monitoring her IRL, so he takes her, his wife, his other wife, and his sister to a remote island.

(But he already has 9 wives, 72 concubines, and a child that he's barely even seen due to war!)

Where on earth does MC get the balls to criticise Cao Cao for being licentious? He's married (many times over), has a kid he barely sees, and still pursues her because she's The One That Got Away, the white moonlight in his heart... whatever. To be fair, aside from his one cinnabar mole, he basically doesn't chase anyone else, although he gradually accepts his other NPC wives. But it's all still quite ridiculous and hypocritical.