Red Sonata 0.13 Full Changelog: 

Content:

• 2 New Animated NSFW Scenes (One with variation)
• 6 New Quests (some longer, some shorter)
• 1 Path-Exclusive Quest

Other Improvements:

• You can now fully replay the animated scenes (first implementation, expect future improvements)
• Updated train and Horikita images in the prologue
• Ibuki now moans in her H scene 
• Fixed some crashes with Discord presence on Linux (needs to be tested)

0.13.1:

Additions:

• Added Sleep system.
• Added some animations for backgrounds.
• Added some missing speaking animations.

Improvements:

• Improved almost every scene in the 0.13 update (mostly eyes).
• Improved the gallery replay system.
• Updated PC icons.
• Updated MC's profile pictures.
• Made improvements to chapter selection.
• Removed some unnecessary animations on the PC screen.
• Disabled the music player in some parts of the game (spoiler).

Fixes:

• Fixed a bug when loading saved games in some parts of the game (spoiler).
• Fixed a small crash when using the music player.
• Fixed grammar and improved some dialogues.

0.13.2:

New Features:

• Added inventory system
• First implementation of exploration
• Money-making minigame
• Journal to track stats of other characters
• Two in-game shops

Other Tweaks:

• Reduced chess difficulty
• Reduced game's size (again)

Two new reading modes:

• Immersive Mode: The game as it was.
• Fast Mode: Removes some clunkiness when setting text speed to max.