i mostly already forget about the update by now until i read your post, and then i remember the gist of it.I know what tsundere and yandere are. Neither of them actually fit the bill. Tsundere characters have affection for a character, and hide it by getting fake-hostile when they're embarrassed. Akira has literally threatened to ruin the MC's life over her (completely false) assumption of his intentions. Similarly, yandere characters have an obsession over the main character and try to hurt other girls flirting with him, which Valentine doesn't seem to be doing.
Mostly, they're just controlling and abusive, and the MC takes it and, regardless of how the player feels about them, likes it.
The only affection shown so far for the MC by either of them just feels out of place due to literally every other interaction during the last update. Akira's not tsundere, because a tsundere wouldn't intentionally give a downblouse shot (though I don't like that part, either, because it is narratively unearned and completely out of character for literally every other interaction she's had with the MC). The only person Valentine has physically threatened so far is the MC, and her supposed attraction to him is based on her insistence (again, falsely-held) that she and the MC are alike.
This may not be an accurate impression of Update 3 anymore but my impression of it was it was okay. Update 3 made me a patron so me from 6 months ago clearly like it enough.
And I remember why. The interaction between Boss Bitch and the MC cracked me up. I remember every time the MC said something, she couldn't help but response, it's funny af to me. To me this game is close to top-tier. I don't really like the long development time and I don't think Update 1 is that good, but other than that, it's a great game for me.