Isekai Hotel e Youkoso: Mazoku de Yuusha na Saikyou Ane-tachi kara Dekiaisarete Komattemasu

When Riichi was in junior high school, a tragic accident claimed the lives of his parents, leaving him with only his deeply affectionate older sister, Towa, by his side. For three years, they navigated life together until Towa suddenly vanished without a trace. Shortly after her disappearance, Riichi is unexpectedly summoned to another world, where he finally reunites with his missing sister. However, she is no longer the ordinary girl he remembers—Towa has transformed into the most powerful hero in this new realm. Reunited in a fantastical setting, Riichi finds himself thrust into an unpredictable life far removed from his previous struggles. Rather than facing typical otherworldly dangers alone, his greatest challenge becomes navigating the overwhelming attention he receives. This isotherworldly erotic romantic comedy follows Riichi as he tries to adapt to his bizarre new reality, constantly surrounded and pursued by stunning women who refuse to leave him in peace. With his formidable sister at the center of it all, his days are filled with relentless affection and comedic chaos.