 If you liked
Zero no Tsukaima
|
 ...then you might like
Tensei shitara Ken deshita
|
Isekai anime with protagonists wielding a sentient magical sword. In Zero no Tsukaima, the main character gets a hold of an ancient legendary sword not too long after having been summoned in another world; in Tensei shitara Ken Deshita, the main character gets reincarnated into an intelligent sword in another world and finds someone to wield them. They're helpful in battle as well as in everyday situations. Their wielders treat them like friends.