Masato Kashiwabara, born June 23, 1995 in Chiba Prefecture, Japan, is an original creator known for his work in anime. He is also recognized by the alternate name Nanamori. Kashiwabara is a founding member of the Japanese vocal group Strawberry Prince, and his creative efforts are centered on developing original stories and content for the group's multimedia projects.

Kashiwabara holds the role of original creator for the anime film Gekijōban SutoPuri Hajimari no Monogatari: Strawberry School Festival!!!!, a feature-length production tied to the Strawberry Prince franchise. His contributions to this work also include serving as executive producer and planning producer. To date, no published manga works are attributed to Kashiwabara, indicating his primary creative output is focused on original anime concepts rather than serialized print comics.

His artistic identity is deeply linked to Strawberry Prince, a group that operates across music, live performance, and animated media. Kashiwabara’s role as both a performer and the original creator behind the group’s anime adaptation highlights a model where musical talent directly shapes narrative-driven visual projects. Within the Japanese entertainment industry, his work represents the integration of idol group branding with standalone anime storytelling, positioning him as a creator who builds original animated worlds from existing multimedia intellectual property.