Tamagawa-san Detemashita?

• Name — Tamagawa, Is That You? • Ja Kanji — 玉川さん 出てました? • Ja Romaji — Tamagawa-san Detemashita? • Genre — Erotic comedy

• Type — manga • Author — Ume Matsutake • Illustrator — Komikan Matsumoto • Publisher — Square Enix • Imprint — Young Gangan Comics • Magazine — Young Gangan • First — December 6, 2024 • Volumes — 4 Tamagawa, Is That You? is a Japanese manga series written by Ume Matsutake and illustrated by Komikan Matsumoto. It began serialization in Square Enix's seinen manga magazine Young Gangan in December 2024.

Shikishima, a man who works in a convenience store, is devastated when he heard the news that his favorite AV idol Yuri Miyama has retired. One day, he is asked to interview a woman named Tamagawa for a part-time job at the store. Then when he approaches her, he is stunned at her resemblance to Yuri Miyama, and left wondering whether if Tamagawa is actually her.

Written by Ume Matsutake and illustrated by Komikan Matsumoto, Tamagawa, Is That You? began serialization in Square Enix's seinen manga magazine Young Gangan on December 6, 2024. Its chapters have been collected in four tankōbon volumes as of June 2026. During their panel at Anime Expo 2026, Square Enix Manga & Books announced that they had licensed the manga for English publication, with the first volume set to release in January 2027.

A photoshoot collaboration between the series and former AV idol Yua Mikami was included in the 21st 2025 issue of Young Gangan on October 17, 2025. In commemoration of the release of the second volume on October 24, 2025, a promotional video containing narration from Tomokazu Sugita was uploaded to Square Enix's YouTube channel that same day.