It's quite surprising how this show keeps finding new ways to remain uninteresting. Here we are after eight boring episodes, and when some characters finally fall into the Hollow Earth, one would expect to see some monsters and the Hollow Earth for at least 15 minutes of screen-time. However, instead, it takes a detour into another boring backstory-this time among other things about how Kentaro's dad met his mom. Who even cares about these characters? Moreover, I think we can anticipate another boring episode about how Hiroshi met Cate's mom also coming pretty soon, keeping true to the usual formula of about 40 minutes of backstories and boring conversations, with only about 2 minutes of some monster that ends in a cliffhanger as always.