The grandmother who raised Michan was actually his great-aunt; her twin sister had lost her husband. She had considered killing someone to extend his life, but the great-aunt—the one who raised Michan—was the one who insisted they live as decent human beings.
So, the husband died, and the two sisters raised the daughter together—the girl who would become Michan's mother. That is how the great-aunt came to raise michan after his mother's death, because the "bad" grandmother decided to go along with Jimmu's plan—possibly in hopes of bringing her daughter back.
I hope that makes it clearer.
Thankss
oh my god lightened up my life fr
I love you
I'm terrible with names so the whole grandma's plot is confusing me so much Any kind soul can give me a quick recap