Hengen Taima Yakou Karura Mau! Kokoku Geneijou  

The Illusory Castle in the Lake Nation, 変幻退魔夜行 カルラ舞う! 湖国幻影城

What is your understanding of Shirotae's return? Based on this belief, how does Shouko attempt to comprehend the young man's multiple personality disorder? Can you provide more information on Shirotae's origins? Why are all members of his family magic users? Lastly, how does one access this alternate dimension known as the Lake Nation?