Hozuki's Coolheadedness volume 6

What in the world is Hozuki doing when he visit the mortal realm? How do Hell's ogres feel about Setsubun? Is it just me, or do a lot of ogres have curly hair? Why is King Shinko's personal aide the Heian noble Ono-no-Takamura? Are there dinosaurs in Hell? Find all of that out and more in volume 6! And at long last, Hakutaku's age is revealed!