Chainsaw Man: Maqima is my mother's best friend?

(Machima single heroine + Mitaka has a crush on the protagonist but the protagonist confiscated it) Lu Yi travels through the chainsaw world and discovers that the dominating demon Maqima is actually his mother's best friend? At the beginning, I was overheard by Maqima and became the personal secretary of the bad girl! Best friend's son actually wants me to be his dog? Rebellious son!! What? If you want to master the power of a chainsaw demon, why not hire him with money? I will be made int...