Games like Spirit School Days
Games like Spirit School Days include Muse Dash, Mirror 2: Project X, The NOexistenceN of you AND me, Doki Doki Literature Club Plus!, and NEEDY STREAMER OVERLOAD. We matched them by the tags players give Spirit School Days on Steam (Casual, Interactive Fiction, 2D, Anime, and Cute): closest matches first, and among equally close ones the better-known games.

Muse Dash
Shared: Anime · Cute · Casual

Mirror 2: Project X
Shared: Anime · Interactive Fiction · Casual

The NOexistenceN of you AND me
Shared: Anime · Interactive Fiction · Cute

Doki Doki Literature Club Plus!
Shared: Anime · Cute · Story Rich

NEEDY STREAMER OVERLOAD
Shared: Anime · Cute · 2D

Florence
Shared: Casual · Cute · Indie

Noctuary
Shared: Interactive Fiction · Cute · Anime

Montaro
Shared: Casual · Anime · Cute

ATRI -My Dear Moments-
Shared: Anime · Cute · Casual

The Hungry Lamb: Traveling in the Late Ming Dynasty
Shared: Interactive Fiction · Story Rich · Anime

OneShot
Shared: Story Rich · Cute · Indie

Far Away
Shared: Anime · Story Rich · Cute

Cat Goes Fishing
Shared: 2D · Casual · Cute

Lucy -The Eternity She Wished For-
Shared: Anime · Cute · Story Rich

To the Moon
Shared: Story Rich · Interactive Fiction · Indie

Parquet
Shared: Anime · Casual · Cute

NEKOPARA Vol. 0
Shared: Anime · Cute · Casual

NEKOPARA Extra
Shared: Anime · Cute · Casual

The Weeping Swan: Ten Days of the City's Fall
Shared: Interactive Fiction · Anime · 2D

Undertale
Shared: Story Rich · 2D · Multiple Endings

Fox Hime Zero
Shared: Anime · Casual · Cute

DJMAX RESPECT V
Shared: Casual · Anime · Cute

OPUS: Echo of Starsong - Full Bloom Edition
Shared: Interactive Fiction · Anime · 2D

your wife
Shared: Casual · Cute · Anime