SEIGI NO ROKUGOU

Seigi no Rokugou summary:

Shota Sangi, a withdrawn high school student with no motivation and no friends, is suddenly introduced to the artificial intelligence weapon "Rokuro"!
Shota is forced to team up with Rokuro and undergoes a spectacular transformation into a reclusive hero... or does he?
A mysterious robot "Rokuro," who speaks in a mysterious Kansai dialect, suddenly appears in front of Shota, a boy who is a recluse. When Shota's "motivation" increases, the two combine to become the hero "Xenonine"!
A hero for wimps, by wimps, for wimps is born!