Assassin & Cinderella

• Ja Kanji — アサシン&シンデレラ • Ja Romaji — Asashin & Shinderera • Genre — Romance

• Type — manga • Author — Yuzo Natsuno • Publisher — Square Enix • Imprint — Gangan Comics Online • Magazine — Gangan Online • First — August 22, 2022 • Volumes — 6 Assassin & Cinderella is a Japanese manga series written and illustrated by Yuzo Natsuno. It began serialization on Square Enix's Gangan Online manga website in August 2022.

Neneko is a spy on a mission to seduce Omi, an assassin who works for an enemy organization. Having figured out her true motive, Omi proposes marriage to prevent Neneko's employer from learning that she failed to deceive him.

• Neneko Sato • Saori Ōnishi (voice comic) • Omi Amai • Yūichirō Umehara (voice comic)

Written and illustrated by Yuzo Natsuno, Assassin & Cinderella began serialization on Square Enix's Gangan Online manga website on August 22, 2022. Its chapters have been collected into six tankōbon volumes as of August 2026. The series is published in English on Square Enix's Manga Up! Global app. During their panel at Anime Expo 2024, Square Enix Manga & Books announced that they would begin releasing volumes of the series in English in March 2025.

In commemoration of the release of the series' third volume on May 11, 2024, a voice comic adaptation was released on the Square Enix Japanese YouTube channel that same day. It featured the voices of Yūichirō Umehara and Saori Ōnishi.