This issue's featured title is Ecchi na Gakkou no Kaidan ~Boku no Onee-Shota Youkai Daisensou~, a smartphone exploration-style adult game developed by the circle "M-dan Shinshi no Nikai." With 7,538 copies sold and a rating of 4.49 (based on 497 reviews), the numbers speak for themselves — this is a title that has maintained a devoted following since its release.

The game is set in a school at night, a backdrop that makes perfect use of its summer setting. The story kicks off when a young boy visiting relatives in the countryside encounters Ayane, a shrine maiden, and accidentally unleashes a host of sealed yokai. This premise cleverly borrows from Japan's rich kaidan tradition and fuses it seamlessly with the onee-shota genre. By grounding itself in the universally familiar horror motif of "school ghost stories," the game transcends the typical eroge formula and earns genuine narrative pull — a feat well worth highlighting.

The choice of an exploration-based gameplay system is another element that meaningfully elevates the experience. Wandering every corner of the school building after dark and encountering yokai at every turn keeps players in a constant state of anticipation — always wondering what's waiting around the next corner. Seduction events are organically tied to the act of exploration itself, so the erotic scenes never feel abruptly inserted; instead, they flow naturally within the rhythm of play. There's little doubt that this thoughtful design is what earned the game its near-perfect rating.

On the character front, the roster of 14 or more yokai is nothing short of impressive. Familiar figures from classic school ghost stories — including "Hanako of the Toilet" — have been reinterpreted in an erotic context, a treat that fans of this genre will find irresistible. Among them, the Oni Princess, who reigns as queen of the yokai, serves as a pivotal character whose role shapes the game's ending, lending the overall narrative a satisfying tension and spice. The busty and voluptuous cast comes at the player with a wide array of scenarios — seduction, dirty talk, reverse roles, and more — creating a dual-layered structure that delivers both the satisfaction of a harem fantasy and a genuine sense of attachment to individual characters.

One element our editorial team wants to draw particular attention to is the handling of Ayane, the supporting heroine. Far from a passive love interest, she is designed as an active presence whose "arousal level" shifts in direct response to the player's choices — specifically, whether or not the protagonist gives in to the yokai's seductions. Each time the boy succumbs to temptation, Ayane's state changes, until she ultimately begins making advances herself. This creates a palpable sense that the player's decisions are genuinely shaping the world of the story. Furthermore, the fact that both the Happy End and the Bad End are structured as rewarding outcomes in their own right — rather than a simple good-versus-evil binary — speaks to a level of sophistication rarely seen in adult games.

The smartphone optimization is also worth noting. While rooted in a PC game, this title has been carefully tailored for mobile play, offering the ease of a quick session during a commute or before bed — yet it doesn't skimp on content, boasting 60 or more base CGs in event scenes alone (not counting character sprites). The inclusion of a complete strategy guide is a thoughtful touch as well, ensuring that players who want to see every event won't miss a thing. The game is breezy enough to enjoy as a casual exploration title, yet deep enough for those who want to hunt down every character's story — and that flexibility in play style is almost certainly what has helped push sales well past the 7,500-copy mark.

A summer night. A school overrun by yokai. A story of seduction and temptation that sweeps you up and carries you through an unforgettable season. This game has the polish to justify every word we've devoted to it here. Standing at the crossroads of Japan's kaidan culture and the onee-shota genre, it is far more than "just another eroge." With exploration, meaningful choices, and storytelling all working in concert, this title stands as a genuine landmark in the doujin game scene — and we have no hesitation in saying so.