Koi Doctor Wife, Chief Assistant, Come to the Bowl Quickly!

A little intern in the 21st century accidentally traveled through time. His father didn't care for him, his mother didn't love him, and he even carried a small oil bottle. He finally found a big supporter for himself, but he didn't expect that the other person turned out to be a cruel and cruel bastard, until... Nani? This shady chief assistant is actually the father of the baby he has been looking for? ?