Grimgar of Fantasy and Ash
灰と幻想のグリムガル (original)
When Haruhiro awakens, he's in the dark surrounded by people like himself who have no memory of where they came from or how they got there. As the darkness fades, a fantastic new world called "Grimgar" appears before them and the adventure begins.
Starring Fukushi Ochiai, Mikako Komatsu, Nobunaga Shimazaki, Daisuke Namikawa, Hiroyuki Yoshino, Mamiko Noto, Hiroki Yasumoto, Yoshimasa Hosoya, Tomokazu Seki, Haruka Terui
It's a animation and drama show, and has a rating of 7.3 out of 10 from Imdb which is usually fine for this kind of show.
Watch it here
Not found streaming from Singapore.