He finds out that he is pregnant and finally stands up for himself and I like the way that the author ties homos*xual marriages and male pregnancies, so that there is no plot hole. I haven't seen that logic used before.

He tries to be decisive and end things with ml, but fails at it. He manages to end things with his toxic family for good.

The redemption arc is nice, no stalker nonsense. The ML finally loses his tsundere shell and becomes an open and honest communicator, there is genuine character development.

The characters are good, just when you think that they are cookie cut characters suddenly they become all too 3D at times.

I didn't expect the plot twist, the MCs family is so broken because, the MCs mother was an unfavored twin herself who instead of healing, shs continued with the toxicity. An unsupportive husband and she spiraled. The whole favouritism part is done well.

I like the conclusion also, especially when they show that the other twin has changed for good.