When Phos is about to give up on writing the encyclopedia that Kongo Sensei had entrusted to him, something strange appears from the sky. "Phos what the f-ck is that?" "I do not know!" "Do you even know where it comes from?" "Oh yes! It fell from a sunspot!" Artist of the cover: RU@9/15東京きみせん2 on Tumblr.