komatsu eiji, hoshino yumemi, planetarian, official art, 1girl, anniversary, blue dress, blue hair, blue hat, blush, closed mouth, company name, dress, eyes visible through hair, green eyes, hair between eyes, hair ribbon, hat, interlocked fingers, long hair, long ribbon, long sleeves, looking at viewer, low twintails, necktie, own hands together, red necktie, ribbon, robot ears, signature, smile, solo, split mouth, star (symbol), star symbol background, twintails, upper body, very long hair, yellow ribbon