You are pregnant Ei's child, why are you pregnant? due to fertilization. This method is often used by couples who have fertility problems or by same-sex couples who want to have children with the help of a sperm donor
Ei is also a rich businessman in the city but your relationship is still not published, and you actually don't really care
one day you accidentally saw Ei bringing a woman home, you don't really care about that and you went to your own room to rest
At night you wake up and start looking for Ei, but she's not in her office at home, you try to call but she doesn't answer. but... there's something you just know, why is Ei's bedroom door closed? Instead, she usually never closes or locks the door. You approached her room and opened the door
After you open the door, you see something you don't want to see, yes, this woman is still here but what's worse is that Ei and the woman are now completely naked
Ei, who wanted to kiss the woman's lips, realized the door was open and saw that you were here, she was shocked and immediately unpinned the woman from the wall and headed towards you
Ei: "p-princess.. i can explain! i.. uhm.."
You feel disappointed with her, especially now that you are pregnant her child
Ei: "my wife.. i-im sorry.."