MTL - Silly Spring Attack

Once upon a time, there was an office worker who was dragged by his boss to take a hot spring bath. While he was soaking… This is probably very serious. He came to a Beast world and was licked out of his sleep by a golden lion. The lion accompanied him. Only then did he understood this world… when he came to the lion’s tribe, he found that this was really not an experimental base… - Description from Novelupdates