The Growth Story of an Unknown Young Monster and Deity

This is the story of a little red bird's weight loss as it grows. The following synopsis is omitted...

This is, of course, a YY novel. It's just a YY novel, nothing more.

In the bustling tavern, a bard sang the legend of a dragon-slaying hero by the fire, while several adventurers gathered together to play monster cards. Mali finished the remaining capsule coffee in his thermos and said to the half-elf girl beside him, "Let's go, it's time to go," the kind waitress warned. "But there's a group of vicious snake-men bandits lurking on the road ahead. Why don't you wait a little longer? The Baron is already recruiting mercenaries." "No problem, we'll drive."