Conan: the Strongest Substitute Messenger

The protagonist Giorno Giovanna came to the world of Conan, And he also awakened the second avatar's "data change" ability, which is to control data and change data. And the protagonist is a girl-obsessed author: I am the same, but I don't have a sister. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.