"I thought it was a title? Because she's like, a knight or something who rides the horse. But I can't see her having any other name than 'Rider'. And the horse is just Horse. No other name for HER either."

It's his own fault. He wanted to learn more about his past life's family and now he's opened up a door he can never close again. This is exactly what he gets.

"These are like, the family for my past life? I don't have a lot of memories about them, so I wanted to learn some more, y'know? At least have some names. But NOPE, turns out the names are bonkers, too."