Higurashi When They Cry: Abducted by Demons Arc, Vol. 2 — Ryukishi07

Up until now, Keiichi's been having the time of his life with his new friends in Hinamizawa. But when their good-natured pranks take a deadly turn, Keiichi grows more and more suspicious about their involvement with the so-called 'Oyashiro-sama's Curse.' Turning to Ooishi-san for reassurance only confirms Keiichi's worst fears as dark secrets about Rena's past are revealed. Is it just his imagination? Or do his friends really mean to kill him?