Games like Brave Nine
Games like Brave Nine include Honkai Impact 3rd, Metaphor: ReFantazio, Wuthering Waves, Symphony of War: The Nephilim Saga, and Persona 5 Royal. We matched them by the tags players give Brave Nine on Steam (Lore-Rich, Anime, Story Rich, Strategy RPG, and Turn-Based Tactics): closest matches first, and among equally close ones the better-known games.

Honkai Impact 3rd
Shared: Anime · Free to Play · Story Rich

Metaphor: ReFantazio
Shared: Anime · Story Rich · Singleplayer

Wuthering Waves
Shared: Anime · Story Rich · Free to Play

Symphony of War: The Nephilim Saga
Shared: Story Rich · Tactical RPG · Strategy RPG

Persona 5 Royal
Shared: Anime · Story Rich · Singleplayer

Valkyria Chronicles™
Shared: Anime · Story Rich · Strategy RPG

Clair Obscur: Expedition 33
Shared: Story Rich · Lore-Rich · Singleplayer

Persona 3 Reload
Shared: Anime · Story Rich · RPG

Warframe
Shared: Free to Play · Action RPG · Action

Zenless Zone Zero
Shared: Anime · Free to Play · Story Rich

Persona 4 Golden
Shared: Story Rich · Anime · Singleplayer

TROUBLESHOOTER: Abandoned Children
Shared: Turn-Based Tactics · Tactical RPG · Strategy RPG

Granblue Fantasy: Relink
Shared: Anime · Story Rich · Action RPG

DRAGON BALL Z: KAKAROT
Shared: Anime · Story Rich · Singleplayer

Where Winds Meet
Shared: Free to Play · Singleplayer · Action RPG

Tactical Breach Wizards
Shared: Story Rich · Turn-Based Tactics · Strategy RPG

Tales of ARISE
Shared: Anime · Story Rich · Singleplayer

The Last Spell
Shared: Turn-Based Tactics · Singleplayer · Strategy RPG

鬼谷八荒 Tale of Immortal
Shared: Singleplayer · Tactical RPG · Story Rich

Persona 5 Tactica
Shared: Strategy RPG · Tactical RPG · Anime

Disgaea 5 Complete
Shared: Anime · Turn-Based Tactics · Strategy RPG

NTE: Neverness to Everness
Shared: Anime · Story Rich · Free to Play

Inkbound
Shared: Turn-Based Tactics · Tactical RPG · Strategy RPG

GrandChase
Shared: Free to Play · PvE · Anime