I? Traveled through time?
Or is it an NPC from a book I haven't read carefully?
God, I don't care if you call me "Master" anymore. You really treat me as your grandson... Ah, no, granddaughter.
Fortunately, this is a world where women are respected, and NPCs will be NPCs. As long as they persist, they will always survive to the end.
…
Wait, this plot is going there, right?
What does it mean that senior sister is interested in me?
No, who changed my senior sister's traditional Chinese medicine to iced American medicine?
Damn it, Master, your disciple is the same! It's great that your apprentice has a magic mirror!
Wait, senior sister, don't come over!
Idea: NPCs may also be able to explode.