This hack changes Julius to Yami Yugi From Yu-Gi-Oh. It also changes attacks, double jumps, and skills to summon monsters.
It also adds one music song.
Remember it's necessary to use Delta patcher to apply the patch.
Instructions:
Use xdeltapatcher for put the patch in your rom (USA) (No Intro)
Thanks for Playing my Hack
Database match: Castlevania - Dawn of Sorrow (USA)
Database: No-Intro: DS (all) (v. 20210227-111036)
File/ROM SHA-1: 47530FF87E608F88105A314FDF36DC385F8DEC94
File/ROM CRC32: 135737F6