Games like Byakuya Museum
Games like Byakuya Museum include OMORI, Tales of the Black Forest, Undertale, Clair Obscur: Expedition 33, and Persona 5 Royal. We matched them by the tags players give Byakuya Museum on Steam (JRPG, Horror, Fantasy, Indie, and Pixel Graphics): closest matches first, and among equally close ones the better-known games.

OMORI
Shared: Indie · Pixel Graphics · Story Rich

Tales of the Black Forest
Shared: Horror · Pixel Graphics · Indie

Undertale
Shared: Pixel Graphics · Story Rich · Multiple Endings

Clair Obscur: Expedition 33
Shared: Fantasy · JRPG · Story Rich

Persona 5 Royal
Shared: JRPG · Story Rich · Anime

DELTARUNE
Shared: Pixel Graphics · Story Rich · Fantasy

Chained Echoes
Shared: JRPG · Pixel Graphics · Indie

CHRONO TRIGGER®
Shared: JRPG · Story Rich · Pixel Graphics

Persona 4 Golden
Shared: JRPG · Story Rich · Anime

Ib
Shared: Horror · Pixel Graphics · Indie

Milk outside a bag of milk outside a bag of milk
Shared: Pixel Graphics · Indie · Story Rich

The Witch's House MV
Shared: Horror · Pixel Graphics · Indie

Angels of Death
Shared: Horror · Pixel Graphics · Story Rich

NEEDY STREAMER OVERLOAD
Shared: Pixel Graphics · Anime · Multiple Endings

Eiyuden Chronicle: Hundred Heroes
Shared: JRPG · Pixel Graphics · Fantasy

OneShot
Shared: Indie · Pixel Graphics · Story Rich

KinitoPET
Shared: Horror · Indie · Multiple Endings

FINAL FANTASY XV WINDOWS EDITION
Shared: JRPG · Fantasy · Story Rich

Tales of ARISE
Shared: JRPG · Fantasy · Anime

Yog-Sothoth’s Yard
Shared: Horror · JRPG · Dark

Persona 3 Reload
Shared: JRPG · Anime · Story Rich

LISA: The Painful
Shared: Indie · Story Rich · Pixel Graphics

The Test
Shared: Pixel Graphics · Multiple Endings · Story Rich

Rakuen
Shared: JRPG · Story Rich · Pixel Graphics