Sanada Yukimura is building a castle to defend Oosaka during the Summer War. But his plan has a flaw: there's a hole in the ground that forms a secret entrance!
Huh?
Nanü, hier wurde ein Loch
gebuddelt, Mutti.
Maman, il y a un trou.
Eh? Guarda, mamma, c'è un buco.
Hã?