So the main characters are most likely three boys in elementary school and it's episodic. I remember a chapter where the older brother of one of the boys was admitted into hospital due to spirits/ghosts they later find something like a body or human remains underneath his room or the hospital.

[img]http://media.tumblr.com/f01eae13b74aac35647a4461738b11cf/tumblr_inline_mhgsk0BYnH1qz4rgp.gif[/img]

Jigokudou Reikai Tsuushin

Be kind or get banned

thanks

[img]http://media.tumblr.com/f01eae13b74aac35647a4461738b11cf/tumblr_inline_mhgsk0BYnH1qz4rgp.gif[/img]