Name: Re:Zero -Starting Life in Another World-
Age Rating: TV-14
Content: It's honestly just really brutal (They aren't afraid to have gory death scenes)
Plot: Natsuki Subaru, an ordinary high school student, is on his way home from the convenience store when he finds himself transported to another world. As he's lost and confused in a new world where he doesn't even know left from right, the only person to reach out to him was a beautiful girl with silver hair. Determined to repay her somehow for saving him from his own despair, Subaru agrees to help the girl find something she's looking for...
Number of episodes: 25
Where to find it: Crunchyroll (Dub and sub)
My opinion: If you can handle gory stuff, it's worth watching