Product visuals center on Emma Koishikawa in her Nocturne iteration, redesigned by Toyhouse Co., Ltd., MARUYA and Mitsunobu Tamura for this special collaboration. The overall aesthetic blends a calm, composed pose with a noir-inspired uniform built on a black and white color scheme, reflecting a more mature Emma-chan than seen before. Emma sports a stylized 1/12 Honda AB12 Motocompo vehicle, color-tuned exclusively for this set, with newly designed tire parts and a fresh helmet piece. The face part is pre-painted, featuring a smiling expression and vibrant blue eyes that pop against skin tone C. Multiple skirt and accessory parts allow varied poses, including sitting and riding dynamics.

Within the Sousai Shoujo Teien universe, Emma-chan Senpai pairs with Aoshima Bunka Kyozai's classic Motocompo as part of a whimsical crossover. In this story, she transitions from studio scenes to a street-ready display, climbing onto the Motocompo with a confident, slightly mischievous grin. The collaboration imagines Emma mastering compact mobility, riding the retro scooter into a quiet, urban landscape. Accessories include interchangeable hairstyles, multiple facial expressions, a draw/PC tablet, and a school bag, enabling scenes of study, speed, and playful teamwork. The package invites collectors to re-create moments of calm authority meeting quirky vintage tech.