Gankyu-undo-niyoru dakkan saku to sai shori

In an isolated region of Kyushu lies the town of Suiten. Though seeming small and modest, Suiten is not a picturesque place for a vacation, unless it is from the "Unseen World." Taro, Makoto, and Masayuki, three boys with traumatic pasts, learn to let their souls cross between the two parallel worlds. However, the Unseen World is no mere copy of the real Apparent World. (myanimelist.net)