Mature Content Description

The developers describe the content like this:

-Contains alternate scenes for each boy's final lover level moment, with full nudity/masturbation, and post-coital imagery.
-Sexually suggestive outfits are added to this version, including a 'birthday suit' mode that shows each boy uncensored in full nudity.
-Alternate text/dialogue in some cases that has more sexually explicit and mature wording and audio.
-Many of the pin-up artwork is changed to be 18+

About This Content

WARNING: This DLC is intended only for adults 18 years of age or older and contains content which some players might find offensive.
This DLC adds the Uncensored Mode to the Game.

Get the NSFW DLC for Blush Blush here! This DLC installs a new mode in your Blush Blush game that allows you to play an uncensored hentai (adult) version of the game. New artwork is included, with beautiful high-resolution illustrations and sexy scenes. The DLC also includes the “birthday suit” outfits, and extra dialogue exclusive to the DLC.

To enable the adult content, look for the “Uncensored Mode” toggle in the “Settings” menu in your game (it may take a minute to download all the new artwork, so hang tight for a sec!). Just click the checkbox for “Uncensored Mode” and you’re golden!

Contents:
-Adds alternate scenes for each boy’s final lover level that contain full nudity, sexual interactions and post-coital imagery
-Sexually suggestive outfits are added for each character, including a fully nude uncensored “birthday suit” mode
-Adds alternate text and audio that features more sexually explicit dialogue and adult themes