"Planetarium" Ai Otsuka Price: ¥1800 It has been stored with the outer film on. There are some light scratches on the disc. Please understand. #AiOtsuka #CD・DVD This is the 10th single overall. It's a medium-tempo number singing about a girlish, sad love, and her unique lyrics make you think of expressions and gestures. Her interesting perspective and the sad yet catchy melody are unique to her.