Kyuuketsuki Sugu Shinu

Chapter 17: 17Th Death: Handa, A Day Off, And History
Chapter 16: 16Th Death: Sword Slayer Nagin's Longest Day
Chapter 18: 18Th Death: Moment By Moment Hell In A Manga Cafe
Chapter 16: 16Th Death: Sword Slayer Nagin's Longest Day
Chapter 18: 18Th Death: Moment By Moment Hell In A Manga Cafe
A vampire hunter learns of a mansion inhabited by a vampire who's rumoured to have kidnapped children and goes there intending to take him down. But then it turns out that the vampire's a wimp who keeps turning into ash at the smallest things... And that the kids aren't being held captive, they're just using the "haunted house" as their own playground.