Reincarnated as the World TreeTensei Shitara Sekaiju Datta Ken; 転生したら世界樹だった件; Reincarnated as the World Tree; When I was Reincarnated, I was a World Tree

I was a NEET, but one day I went to a convenience store and was killed by a robber. After that, I was suddenly noticed by a goddess who appeared, and I successfully reincarnated into another world. However, my reincarnated form was unexpectedly a “plant”…! Moreover, for some reason, the monsters and humans I encounter are calling me “World Tree-sama”!?