Hiko is a Japanese restaurant in the basement of Ryubo Department Store in Kumoji, Naha, Okinawa, serving unagi donburi and hitsumabushi. Eel is the main item, and hitsumabushi, grilled eel served with rice, is the signature dish. Around 11:30 a.m. the restaurant was not crowded, and partitioned seating allows for a quiet meal. The eel falls short for its price.