when I saw the title, I didn't remember at first. But, I thought it was about the guy who got murdered and a girl saw a ghost stuff.
But then, the second page immediately gave me another doubt that I read a right manga or not, right away.
Taku hated Sahara because Sahara didn't respected his opinion and it made his crush emberassed herself.
Even though, it looks like he actually try to kill another girl who approach to him now. But, My bet is he couldn't do it and she will judge that he is not killer.
Plus, I think she is there when Sahara died. She probably know he didn't kill him.