When I was reincarnated, I became a box-shaped monster. Eventually, I evolved into a humanoid monster.

When the boy woke up, he was a box. Having been reincarnated into a different world, at first he was confused and didn't understand what was going on. And several hundred years have passed since then... He was already living a fairly ordinary life as a monster. However, having grown tired of the same scenery, he decides to go outside. While defeating and eating monsters outside to evolve, he eventually becomes a girl, and for some reason gradually comes to be called a hero! The settings and such are fairly rough... Since this is a test post, I probably won't be uploading it very often... Since I have other works to post as well, my updates are slower than a snail. My mental state is as fragile as silken tofu, so please don't rush me... Celebration! We've reached 4000 views & 30 bookmarks! Thank you so much!