Hai to Gensou no Grimgar
When Haruhito awakens, he's in the dark. He doesn't know where he is, why is he here, and where he came from. Around him there are several men and women who have the same circumstances. Haruhito and his companions find themselves in a "game-like world" called Grimgar and must form a party, cooperate, and learn new skills to survive the harsh environment together.
You should watch
Touhai Densetsu Akagi - Yami ni Maiorita Tensai
One stormy night, Nangou is playing a game of Mahjong with the local yakuza. Soon, he finds himself on a losing streak. If Nangou loses, he will have to pay with his life. Suddenly, a young teenaged boy, Akagi Shigeru, barges in, drenched from the...
9 very short non-related stories about the life of Nyarlko, Mahiro and/or Cthuko.
Haiyoru! Nyaruani: Remember My Mr. Lovecraft
The story centers around Nyaruko, a formless Cthulhu deity who can take on the shape of a seemingly ordinary silver-haired girl. Mahiro Yasaka is a normal high school who is chased by aliens one night, until Nyaruko saves him.