Churning 'Devour' Destructive Action

In the 23rd century AD, a giant insect called "Devour" was born in the world. It devoured living creatures, destroyed all things, surrounded the world, and reproduced offspring. When the giant insect came to the earth, everything no longer seemed ordinary, and disaster was indeed coming... The protagonist Kichi Yumashi was a person abandoned by the world. When the disaster came, he also became the first batch of food to bring the destroyer. 'Swallow' to move forward, 'swallow' to reproduce, and 'swallow' food. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.