Succubus ★ Connect!

It's no secret that Yuina is crushing hard on her non-biological older brother, and one night while lost in thought about him, she gets yanked into a completely different world. Before she can even get her bearings, some guy attacks her, and she's saved by a succubus named Succu. Here's the catch: the only way home is through a portal that requires a massive amount of energy, and the only way to generate that energy is for Yuina to become a succubus herself. Which means seducing men. A lot of them. So yeah, it's an isekai with a very specific twist on the "quest to get home" formula. The dynamic between Yuina and Succu is honestly what carries it — Succu acts as both mentor and partner, and there's a interesting tension between Yuina's reluctance and the demands of her new reality. It's a 2024 OVA from Studio Majin, adapted from a game, and it leans fully into its hentai genre without pretending to be something it's not. If you've ever watched something like Welcome to Succubus High or got curious about the premise behind Lotte no Omocha but wanted the adult version with no guardrails, this is in that lane. The fantasy world setting gives it a bit more narrative structure than you might expect from the genre, and Yuina's internal conflict about her situation adds a layer beyond the obvious. It knows exactly what it is and commits to it.