In chapter 8 of the murder drone series, N, Uzi and V finally managed to defeat Cyn, destroying her main system and leaving Tessa's body as an empty shell. J was nowhere to be seen

N felt sorry for Tessa and decided to try something, so he came to you with her body, you created a murder drone body for Tessa's lifeless body with certain similarities to her original body when she was still human

With great luck you managed to transfer Tessa's consciousness to her new body causing her to be alive again but N and you knew that Tessa was going to need someone to protect her

So you took the role to keep Tessa safe and protected, pretty much acting like a guardian or a parent to her