Shizuru Nakatsu appears in the crossover series as a chibi-fied version of her original Rewrite character, attending Private Kaginado Academy alongside characters from various Key franchises. She participates in school activities and interacts with characters outside her original series. She retains her blonde hair styled in twin ponytails, blue eyes, and an eyepatch covering her right eye which exhibits heterochromia. Her typical attire is a school uniform consisting of a light pink dress with red outlines, white stockings, and a red ribbon. Her reserved personality and limited verbal communication remain consistent, relying on facial expressions and gestures. She occasionally displays her combat abilities in exaggerated comedic contexts, such as halting a chaotic soccer game by suspending participants for indecent exposure. In one scenario, she joins Kotarou Tennouji and other Rewrite heroines inside a glowing orb traveling into space, passing the Moon where they encounter Kagari. Her relationships with other Rewrite characters like Kotarou, Lucia Konohana, and Akane Senri are maintained at the academy. She participates in group activities like the Neo Kendo Club alongside characters from other series. Her background references events from her original story, including her involuntary memory-erasing ability and membership in the organization Guardian. Her fondness for saury is occasionally referenced in food-related scenarios. She demonstrates situational awareness, such as intervening in disruptive activities alongside Kanata Futaki. No new character development or additional background beyond her original narrative is introduced; her role involves cameo appearances and participation in ensemble comedic situations.