Suisen appears in the movie "Eiga Oshiri Tantei Saraba Itoshiki Aibō (Oshiri) yo". She propels the central mystery forward by sending Oshiri Tantei (Butt Detective) a cryptic message concerning his partner, missing for ten years. This message sparks the detective's investigation into a major art forgery case. The situation escalates into a vast global conspiracy targeting art galleries worldwide. Suisen's actions serve as the catalyst, drawing the protagonist into this conflict and uncovering the criminal plot.