Memento Memori is a Manga/Manhwa/Manhua in english language, Action series, english chapters have been translated and you can read them here. You are reading chapters on www.mgeko.cc fastest updating comic site. The Summary is

? That eye projects death—till the day life is saved with these hands…! ? Isshin, a lone wolf protagonist, has an ability that allows his eyes to “see how much time a living being has left, that is, their lifespan”. One day he meets a girl at a new school he transferred to. He accidentally looked into her time, to see that she only has “78 hours” left. Will he be able to overturn her deathly fate and save her…?!