Happy Destination

Renato, a half-elf who in despair after the death of his beloved Almas, wakes up as Rei Nagawa inside a strange room in a strange world. In opposition to his state, he finds Almas shaking hips on his belly. Apparently now he earns a living as a novelist, while Almas lives as Rui Aruma, they live together and appear to be lovers. Despite his unresolved confusion, he feels the joy of spending time with Almas again, when he is suddenly killed by a stranger. But next thing he knows, for some reason, he is back to the time just before his death...!? (Source: Kaiohsha, translated) Notes: Includes one extra chapter.