I Reincarnated and Chose to Collect Titles as Skills

What is the protagonist's full name?

So I want to say, is this a brother-sister relationship?

Very nice, a rare first person perspective

Rare first person Come on There is an upper limit on the title, which limits the protagonist's abilities. "Although there is no upper limit on the number of titles you can obtain... But there are only a maximum of 30 titles with effects."