Gotta find manga about girl that can die in your place

[Akarroa]

I remember it was about a boy who picked up this girl's spilling luggage, and to thank him she said she would take his place if he died. He later gets killed and she indeed switches with him and tells him he must find the killer and touch his forehead while saying "scapegoat" to finalize things.

 

[Whoosh]

https://mangadex.org/title/32638/shichi-ha-gojuroku

 

[Akarroa]

Bless you