Japanese college student Eri Iizuka (R) checks her excitement on a "Doki-doki checker" as boyfriend Tsugutoshi Akano smiles in Tokyo September 24. By touching sensors on the angel's wings and answering questions as with a lie detector, the angel's heart flashes red and emits "heartbeat-like" sounds to show players' nervousness. The toy is on sale for 1,480 yen (about $11).