“Bringing suffering to every rival in love. The women who lives at 2AM: “Nail Knocker” Shiizaki!” Hinako Shiizaki is a crew member of the Fraxinus, a ship located 15,000 meters above Tenguu City. She holds the title “Nail Knocker”. As a member of the Fraxinus crew, Shiizaki helps vote for the decisions that Shido makes when he confronts a Spirit. According to Kotori, she is a person who brings misfortune to her love rivals. Besides Reine, Shiizaki is usually the person who informs Kotori with updates about miscellaneous things like contact with headquarters.