Holy Shaft

Holy Shaft is Kana's bite-sized take on the isekai formula, stripped down to its mechanical essentials and wrapped around a single recurring mechanic: spanking. Rather than sprawling narrative, you're dropped into an elevator that stops at ten different floors, each floor a self-contained scenario where your choices determine the outcome. The entire experience runs 5–15 minutes depending on your decisions, making it more arcade-like appetizer than traditional visual novel.

The premise is straightforward: ascending an elevator means encountering different characters and situations where spanking plays a central role. Each floor presents branching paths that shift how scenes unfold, encouraging replays to see how different choices cascade into different outcomes. There's no complex stat system or deep character development—Kana designed this as a focused, choice-driven experience that respects your time. The 3D visuals give the game a distinct look compared to sprite-based alternatives, and the quick scene structure means technical performance stays consistent across Windows, macOS, Linux, and Android.

The adult content here is explicit and unapologetic; this is hentai-adjacent material centered on spanking and intimate scenes. If that's not your lane, Holy Shaft has nothing else to offer narratively. For those specifically interested in this particular kink or fetish-focused games that don't pretend to be anything else, the directness is refreshing. Kana notes this began as part of a larger project they shelved, releasing it standalone—so expect polish befitting a finished mini-game rather than a full production.

Worth noting: at roughly 5–15 minutes per playthrough, this is pocket-sized content. The replay value depends entirely on whether you want to experiment with different floor choices to see alternate scenes. Kana's other titles (Mandatory Manager, Kana Sensei, Mandatory Mentor) suggest they're prolific in this space if Holy Shaft clicks for you.