Saikyou Ane-tachi Kara Dekiai Sarete Komattemasu~

After losing his parents in an accident during middle school, Richii was left with only his loving older sister, Towa. But three years later, she mysteriously vanishes too. Soon after, Richii finds himself summoned to another world—where he reunites with Towa, now the strongest hero of all! Surrounded by gorgeous women who won’t leave him alone, his life turns into a steamy otherworldly romantic comedy full of endless affection.