Games like Yomi no Kuni
Games like Yomi no Kuni include Hades, Hades II, Cinderia, Curse of the Dead Gods, and The Binding of Isaac: Rebirth. We matched them by the tags players give Yomi no Kuni on Steam (Action Roguelike, Hack and Slash, Roguelite, Dungeon Crawler, and Roguelike): closest matches first, and among equally close ones the better-known games.

Hades
Shared: Action Roguelike · Hack and Slash · Roguelite

Hades II
Shared: Roguelite · Hack and Slash · Roguelike

Cinderia
Shared: Action Roguelike · Hack and Slash · Roguelite

Curse of the Dead Gods
Shared: Action Roguelike · Roguelite · Isometric

The Binding of Isaac: Rebirth
Shared: Action Roguelike · Roguelike · Dungeon Crawler

Halls of Torment
Shared: Action Roguelike · Roguelite · Roguelike

Skul: The Hero Slayer
Shared: Action Roguelike · Action · Roguelike

Megabonk
Shared: Action Roguelike · Roguelite · Roguelike

Dead Cells
Shared: Action Roguelike · Roguelike · Roguelite

Moonlighter
Shared: Hack and Slash · Roguelite · Action Roguelike

Mortal Sin
Shared: Action Roguelike · Hack and Slash · Dungeon Crawler

Death Must Die
Shared: Action Roguelike · Roguelite · Hack and Slash

Vampire Survivors
Shared: Action Roguelike · Roguelite · Roguelike

Jotunnslayer: Hordes of Hel
Shared: Action Roguelike · Roguelite · Hack and Slash

Children of Morta
Shared: Hack and Slash · Roguelike · Action Roguelike

Garden of Witches
Shared: Action Roguelike · Roguelite · Hack and Slash

Wizard of Legend
Shared: Action Roguelike · Dungeon Crawler · Roguelike

Ravenswatch
Shared: Action Roguelike · Roguelike · Roguelite

Soulstone Survivors
Shared: Action Roguelike · Roguelite · Roguelike

Windblown
Shared: Action Roguelike · Hack and Slash · Roguelite

SWORN
Shared: Roguelite · Action Roguelike · Hack and Slash

Lost Castle
Shared: Action Roguelike · Hack and Slash · Dungeon Crawler

Wolcen: Lords of Mayhem
Shared: Hack and Slash · Isometric · Action

Dungreed
Shared: Action Roguelike · Roguelite · Roguelike