L.i.n.k. -Kimyou na Unmei ni Tsunagareta Monotachi no, Chi to Namida no Uta-

There are witches in the world. They have special power like an old magic. But the word "witch" means "assassination" in the modern world. Witches establish their own organization and run a business to secretly assassinate people. Shion has power to "curse people dead". He receives a job offer, completes it, gets a reward and goes back home. He just repeats the same day.... But one day, he just goes home on a different route and meets a girl called Ai along the way. They become friends, but this is just a beginning of ruin.... They, however, decide to walk together to step out of their boring life...