Amamiya, Hiroto died during a ferry trip in Japan and so did all of his classmates and the crew. They're all given a chance to reincarnate into a different world called Origin by a shitty god named Rodcorte and they'd all be given cheat skills. Unfortunately there was another boy with a similar name as MC, fucking Amemiya, Hiroto, and he was accidentally given all of MC's amazing cheat skills so MC instead gets a shitty life as a lab rat for death magic and ends up getting killed by his classmates who were clueless shits. Rodcorte tells MC after his death in his third horrible reincarnation, he'd bring MC back to the normal cycle of life. So he reincarnates MC again this time in lambda, whose name is now Vandalieu, a half vamp half dark elf. His mother ends up murdered and Vandalieu promises to get his revenge not only for those who killed his family, but also revenge to those who were involved with killing him in Origin including the god Rodcorte.
Yondome wa Iyana Shi Zokusei Majutsushi