Games like Young Hearts
Games like Young Hearts include LoveChoice, Love, Money, Rock'n'Roll, ATRI -My Dear Moments-, Parquet, and CLANNAD. We matched them by the tags players give Young Hearts on Steam (Visual Novel, Romance, Colorful, Atmospheric, and 2D): closest matches first, and among equally close ones the better-known games.

LoveChoice
Shared: Romance · Visual Novel · Story Rich

Love, Money, Rock'n'Roll
Shared: Visual Novel · Atmospheric · Romance

ATRI -My Dear Moments-
Shared: Visual Novel · Romance · Anime

Parquet
Shared: Visual Novel · Romance · Anime

CLANNAD
Shared: Visual Novel · Romance · Anime

Lucy -The Eternity She Wished For-
Shared: Visual Novel · Romance · Anime

Senren * Banka
Shared: Visual Novel · Romance · Anime

STEINS;GATE
Shared: Visual Novel · Anime · Story Rich

Doki Doki Literature Club Plus!
Shared: Visual Novel · Anime · Romance

The Hungry Lamb: Traveling in the Late Ming Dynasty
Shared: Visual Novel · Multiple Endings · Story Rich

NEEDY STREAMER OVERLOAD
Shared: Visual Novel · Anime · 2D

Aokana - Four Rhythms Across the Blue - EXTRA2
Shared: Visual Novel · Romance · Colorful

Fox Hime Zero
Shared: Visual Novel · Romance · Anime

Florence
Shared: Romance · Adventure · Visual Novel

BAD END THEATER
Shared: Visual Novel · Multiple Endings · Romance

Chill with You : Lo-Fi Story
Shared: Atmospheric · Visual Novel · Anime

The NOexistenceN of you AND me
Shared: Visual Novel · Anime · Multiple Endings

小白兔电商~Bunny e-Shop
Shared: Visual Novel · Anime · Romance

Gaokao.Love.100Days
Shared: Visual Novel · Romance · Multiple Endings

If My Heart Had Wings
Shared: Visual Novel · Romance · Anime

OneShot
Shared: Atmospheric · Story Rich · Cute

Tricolour Lovestory
Shared: Visual Novel · Anime · Romance

Tiny Bunny
Shared: Visual Novel · Atmospheric · Story Rich

GRIS
Shared: Atmospheric · Adventure · 2D