Knight's & Magic
ナイツ&マジック (original)
A mecha otaku is reincarnated into another world as Ernesti Echevarria, also known as Eru. In this world, huge humanoid weapons known as Silhouette Knights exist. Dreaming of piloting those robots, Eru and his friends, Archid Olter and Adeltrud Olter, aim to become Knight Runners.
Starring Rie Takahashi, Shinsuke Sugawara, Ayaka Ohashi, Atsushi Imaruoka, Hidetaka Tenjin, Kazuyuki Okitsu, Masaru Ikeda, Natsumi Fujiwara, Sayaka Ohara, Sayaka Senbongi
Watch "Knight's & Magic" on Amazon released in 2017. It's a animation and action & adventure show, and has a rating of 7.2 out of 10 from Imdb which is usually fine for this kind of show.