Hanano Choubi

The GROUP liaison is a mysterious figure that hands out and gives out orders to ITEM, making her the de facto leader of the organization, like The GROUP liaison is for GROUP. She contacts them via a ether phone to for general reports through Mugino Shizuri telecommunication terminal for group debriefings.

Personality
He is coolheaded and and analytical while going over the over her groups missions. She also seems to find enjoyment in the failures of her rival liaisons.

Sister Arc
ITEM is briefed about their mission by their liaison, who chooses to communicate them only through voice. Here, she explains that the target is an esper who uses electricity, and adds that the client may have already determined the culprit behind the attacks behind research labs across Academy City. Kinuhata Saiai suggests going for a sneak but all-out attack on the target, but the informant prefers to attack the target only when it chooses to attack another facility. She then points out that she had to comply with certain circumstances that the client wants, so they cannot just do what they like on the target.

Battle Royale Arc
As she walked down the street while holding five helium-filled balloons and a cell phone in the other where she chatted with her counterpart from BLOCK on the subject of her hiding information on on there whereabouts from him making it impossible for him to bring them under control. She then informs him that they can’t cause any more trouble as GROUP had just took out the last of BLOCK in the juvenile hall. He then becomes nervous at his loss of position but, the repercussions he will have to face for their actions under his watch. Though she had lost interest by this time so she hung up and started walking through the crowd again while wondering about the status of SCHOOL’s controller.

DRAGON Arc
ITEM's backer realized that ITEM could not function with only Saiai left in fighting condition and decided to remake a team using the few surviving members from BLOCK, MEMBER, SCHOOL and ITEM. Though the first thing that Measure Heart does is restrain her new teammate Kinuhata Saiai while the former Hound Dogs proceeded to track down Shiage under the order of General Superintendent Aleister to eliminate him, as he was supposed to end up dead during the battle royale between the 5 organizations. It is unknown if she had any knowledge of the Superintendent's plans or not.

World War III
She appears near the end of World War III before Mugino Shizuri, Hamazura Shiage, and Takitsubo Rikou. Ever secretive, she appears wearing a helmet obscuring her face, and is forced to say her catchphrase in order for them to recognize who she is.

Shinyaku Toaru Majutsu no Index
She does not apper to be any way connected to the New ITEM as of yet.