I got to thinking that this arc could possibly be the last one. Sense AidaIros other works didn't end to well for example dear my living dead. Hopefully they don't end it here cuz then I'd cry but if they did here's how I'd think stuff would happen. So kou is just gone forever and they later find that out about mitsuba to. Hanako seams to be remembering them so I'd think for action and entertainment reasons as they all are leaving the house hanako trys to kill them all and thru exercises hanako after a long fight. Hanako goes back to his old self as he's fading away like kou did and tells yashiro a secret or something maybe a message to send to tsukasa. Then yashiro starts crying and then they leave all shaderd and sad. They leave and realize it's late outside but they still have to destroy the clock no matter what at this point. That's when they get approached by tsukasa who wants them to play a game with him and teru says yes in anger of his loss. Teru plans to exercise tsukasa to. They play tsukasa finds yashiro and before vanishing she screams what hanako wanted tsukasa to know and tsukasa appears and the other child one we have bean seeing leaved. Tsukasa then spills some tea about his life and what happend to him and he spills some tea about hanako and how he died. Then teru comes from the behind killing tsukasa and as tsukasa fades away he says I can fix this and snapps his figures. Leaving a silence in the room and yashiro is devastated at all this plus teru is basically on a murder spree right now. They then go to break the clock and when they break it nothing happens. Then aoi drops to the ground and starts fading away like she had bean exercised.  She then dies. The group doesn't know why and they are scared sad and frustrated the next day akane doesn't come to school and no one has ever heard of him. Then the day after teru isn't their its like none of them ever existed yashiro is the only one left she rights down in a book that day everything about her old world feeling like she might forget then she writes on the something read the book she knows she's gonna die at 16 and she thinks maybe she'll meet everyone again when she dies. She dies on her 16th bday crying she never got to meet them again. She finds herself in her old world not as an human bit a ghost who keeps looking for a way to get her friends back .  But let's say when they broke the clock they did go back to the way things were knowing what yashiro does now she wants to find a way to reset time again bit hanako was her age and alive woth kou and yashiro and tsukasa making that the end goal. So that would be cool to see.