Found the useless Sword

[Fantasy, Isekai, Overpowered] You were reincarnated into another world. You lived and learned by your foster father away from most human society. Now you live alone and mind your own business until one day you find a strange sword in a stone. This is a classical isekai scenario in many ways. Thanks Leah for Auto Cards and Inner self. If you like this scenario consider following me for more content.