MESU-DACHI SUN Review: A Yandere Athlete Swimsuit Doujin Worth Knowing About
If you’re drawn to doujin stories where a confident, athletic girl turns possessive the moment she decides you’re hers, MESU-DACHI SUN from circle SHIS is worth a look. It leans into the yandere-childhood-friend fantasy with a sporty, swimsuit-clad energy that fans of that specific combination will recognize immediately.

Work details
| Item | Details |
|---|---|
| Circle | SHIS |
| Rating | ★★★★★ 4.68 (7099 ratings) |
| Genres | おっぱい, 体育会系/スポーツ選手, ヤンデレ, 水着, 中出し, フェラチオ |
A Familiar Trope, Sharpened
MESU-DACHI SUN, from the circle SHIS, plants itself firmly in a trope English-speaking doujin fans will know well: the athletic “gal pal” whose easy physicality with you turns out to hide something far more single-minded. The title itself plays on this — a blend of “mesu” (an animalistic, blunt way of saying “female”) and “dachi” (friend), suggesting a friendship that was never quite as platonic as it looked. Pair that with the sports-team/athlete tagging and the swimsuit setting, and the picture that emerges is a girl who’s spent years being your teammate, your workout partner, your comfortable presence — right up until she stops pretending that’s all she wants.
The yandere tag is doing real work here. This isn’t a shy, slow-burn confession story; it’s one where affection curdles into fixation, and the appeal is in watching a character who’s supposed to be steady and reliable reveal an intensity underneath. If you enjoy the tension of a character who could snap from playful to possessive in the space of one look, that’s the emotional core SHIS seems to be building around.
Setting the Mood: Sun, Sweat, and Swimsuits
The swimsuit tag suggests the work leans on a beach or pool backdrop, or at least the kind of team-training, summer-camp atmosphere where an athletic girl in swimwear is a natural fit rather than a forced excuse. It’s a setting that does double duty in this genre — casual and sun-drenched on the surface, but also stripped of the usual social distance, which fits neatly with a story about a friend whose guard is coming down.
The body-type tagging points toward a more mature, fuller figure for the heroine, which tracks with the “reliable senior teammate” energy the athletic framing implies — someone who reads as grown-up and self-assured before the yandere edge starts showing through.
Who This Is For
This is squarely for listeners or readers who want their doujin romance with an edge of obsession baked in, rather than played purely for comfort. If “sporty girl next door” and “yandere” are two flavors you specifically like to see combined, and you appreciate a swimsuit-and-summer atmosphere as the backdrop for that shift in tone, MESU-DACHI SUN is aimed at exactly that intersection. As with any yandere-tagged work, go in expecting intensity and emotional weight alongside the more straightforwardly intimate content — the appeal here is the contrast between the friend you thought you knew and the one who finally stops holding back.





