I'm looking for music similar to "One Hundred Ghosts at Night" or "Gion Small Bei".

Answer 1

"One Hundred Demons at Night" was a Japanese novel that told the story of a group of monsters and humans. If you want music similar to "One Hundred Ghosts Parade", you can try searching for Japanese monster music such as "Senhon Sakura" and "Nocturne".

Gion Kokuai was a Japanese anime that told the story of a female artist's daily life in Gion (a traditional Japanese arts venue). If you like this kind of music, you can try to search for music related to Gion Kobei, such as "Hanaki" and "Sakura in Bloom."