Gun x Sword
ガン×ソード (original)
A claw-fisted maniac is terrorizing the world, and only Van, a loner in a jet-black tuxedo, can bring the scoundrel to justice. Armed with a shape-shifting sword and a mechanized suit of armor, Van hunts the villain who murdered his one true love.
Starring Kikuko Inoue, Takanori Hoshino, Houko Kuwashima, Takahiro Sakurai, Junko Noda, Saeko Chiba, Satsuki Yukino, Kenyu Horiuchi, Soichiro Hoshi, Masayo Kurata
It's a action & adventure and fantasy show, and has a rating of 7.2 out of 10 from Imdb which is usually fine for this kind of show.
Watch it here
Not found streaming from India.