The Hero Laughs While Walking the Path of Vengeance a Second Time [volume-7]: Light Novel | Nero Kizuka

After successfully returning to the other world, Kaito happens upon Leticia, but she doesn't seem to recognize him. Meanwhile, Kaito spends some time leveling up alongside his two newest accomplices, Mai and Yuuto. So when two targets of his vengeance show up―a prince of the beast lands named Leon, and Leticia's elder sister Lilia―the three of them are ready. It's time to show these traitors a taste of their own medicine.