Synopsis
Does masturbating to your friend feel good?
Ai and Chiaki were hanging out in an empty classroom as always when…
Chiaki says “I masturbated to you yesterday.”
Ai is thrown totally off guard. Supposedly she appeared in Chiaki’s dream and they did… naughty… stuff.
On top of that, Chiaki requests that Ai in turn masturbates to her!
Don’t you think that true friends are friends that can masturbate together?
Caving in to Chiaki, Ai ends up masturbating to her…
But little did she know, that was going to be the key that opens up an entirely new side of her…
Masturbation & masturbation & more masturbation! Check it out!
34 main pages + 1 cover + 1 4-panel bonus manga + 1 afterword
| Circle | Awayda |
| Tags | R18, Manga, JPEG, English |
| Price | 385JPY |
Editorial Review
This work sits squarely in the mutual masturbation subgenre—a niche that’s grown increasingly sophisticated as artists explore the psychological and relational dimensions beyond simple voyeurism. Where many entries in this space treat the act as a plot device, this doujinshi positions it as a vehicle for emotional vulnerability and boundary-crossing between friends, which adds a layer of narrative intentionality to what could otherwise be straightforward erotica.
The distinctive appeal here lies in the premise’s directness: the confession as catalyst. Rather than circuitous seduction, Chiaki’s blunt admission (“I masturbated to you yesterday”) forces immediate confrontation with desire and reciprocity. This confession-to-participation arc gives the work structural coherence beyond the obvious appeal of watching characters discover shared sexuality. The synopsis hints at character development—Ai discovering “an entirely new side of her”—suggesting this isn’t purely mechanical content but explores how mutual exposure reshapes self-perception. The 34-page main count provides sufficient runway to develop this dynamic meaningfully, while the bonus 4-panel manga offers the comedic relief common to stronger doujinshi that need tonal variety.
The English localization is worth noting; availability in the reader’s native language removes friction for non-Japanese-fluent audiences and suggests production quality investment.
This speaks most directly to readers who prioritize psychological realism within fantasy—those interested in how desire emerges between people rather than desire imposed upon them. The mutual, confessional framing differentiates it from predatory or coercive narratives that dominate adjacent tags.
If you’re drawn to girl-on-girl content grounded in awkward honesty rather than power imbalance, and you value character arc over pure mechanical intensity, this justifies your attention. It executes its premise with apparent intention rather than apology.
Get “[ENG Ver.] A Story About Mastu” on DLsite
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Official English version available ↓






