In Hunter X Hunter, Starting with a Sign-In for the Green Bull Devil Fruit!

Ryan transmigrates into the Hunter world, but becomes a second-tier royal, the illegitimate son of the Kakin Empire's king.

Fortunately, just as he finds this identity infuriating, he awakens a sign-in System.

The rewards depend on the location where he signs in.

Sign in at the Kakin royal palace and obtain the Woods-Woods Fruit and Admiral Ryokugyu.

Sign in at Meteor City and obtain Future Sight and Unmoving City Fudou Takuma.

Sign in at Heavens Arena and obtain the martial artist Bang, master of the Flowing Rock-Smashing Fist.

Sign in at Greed Island and obtain the World Item Greed and Ainz Ooal Gown, who knows no desire.

Sign in at Hunter Association headquarters and obtain the Healing Magic of the Healer Who Was Banished from His Party.

This continues until Ryan sets foot on the Dark Continent.

"Sign in!"

P.S. There are quite a few Hunter fanfics these days, but I don't think there's been one that starts in Kakin. I hope you enjoy it.

This novel and its characters are entirely fictional. Any resemblance is purely coincidental. Do not imitate.