Games like Mika's Battle S 2
Games like Mika's Battle S 2 include SANABI, ICEY, Celeste, Katana ZERO, and Bloodstained: Ritual of the Night. We matched them by the tags players give Mika's Battle S 2 on Steam (Action, Anime, Female Protagonist, Story Rich, and Adventure): closest matches first, and among equally close ones the better-known games.

SANABI
Shared: Action · Story Rich · Adventure

ICEY
Shared: Action · Anime · Female Protagonist

Celeste
Shared: Female Protagonist · 2D Platformer · Platformer

Katana ZERO
Shared: Action · Story Rich · Platformer

Bloodstained: Ritual of the Night
Shared: Female Protagonist · Action · Anime

Tomb Raider Game of the Year
Shared: Action · Female Protagonist · Adventure

Planet of Lana
Shared: Action · Female Protagonist · 2D Platformer

Gal Guardians: Demon Purge
Shared: Action · Adventure · Anime

Lost Ruins
Shared: Anime · Action · Adventure

Touhou Hero of Ice Fairy
Shared: Anime · Female Protagonist · Platformer

Freedom Planet
Shared: Action · Female Protagonist · Platformer

Afterimage
Shared: Female Protagonist · Anime · 2D Platformer

Momodora: Reverie Under The Moonlight
Shared: 2D Platformer · Female Protagonist · Side Scroller

Iconoclasts
Shared: Action · Female Protagonist · Adventure

Rabi-Ribi
Shared: Anime · Female Protagonist · Action

Hollow Knight: Silksong
Shared: Female Protagonist · Platformer · Adventure

The Vagrant
Shared: Action · Female Protagonist · Adventure

Rise of the Tomb Raider™
Shared: Action · Female Protagonist · Adventure

NieR:Automata™
Shared: Action · Story Rich · Female Protagonist

Shantae: Half-Genie Hero
Shared: Female Protagonist · Action · Platformer

Portal 2
Shared: Platformer · Story Rich · Female Protagonist

PRAGMATA
Shared: Action · Sci-fi · Adventure

Tales of Berseria™
Shared: Anime · Female Protagonist · Action

MO:Astray
Shared: Action · Adventure · Platformer