User blog comment:DeathGodPrayer/Talk About What You Want!/@comment-16281343-20140128170121

Tried to search for a summary of Ishibumi's SLASH/DOG.

And this is what I found out... (btw, this is a machine translation and I just ironed out the edges.)

"The ship carrying the students toward the school trip was in distress. 233 people died. Ikuse Tobio, couldn't go to the school trip due to cold, loses his classmates, friends and his childhood friend. But, that was the beginning, not the end. The dead turned one after the other into "Utsusemi" and seeks Tobio's life and but was saved by a mysterious pretty girl, Natsume. Survive the fight game and unimaginable horror. Get over the sea of blood."

For those who do not know.. SLASH/DOG is Ishibumi's past work before doing HS DxD. The protagonist, Tobio Ikuse, is also in HS DxD playing the role of the possessor of the Longinus, Canis Lyckaon.