Home › Authors › Eiji Umehara 👤 Eiji Umehara 3 books Books by Eiji Umehara Vivy Prototype (Light Novel) V Vivy Prototype (Light Novel) Vol. 3 2023 Vivy Prototype (Light Novel) V Vivy Prototype (Light Novel) Vol. 4 2023 Vivy Prototype (Light Novel) V Vivy Prototype (Light Novel) Vol. 1 2022