In order to cheer Haruto up after his anime was such a flop, Itsuki gets him as well as Nayuta, Miyako and Chihiro together so they can play a TRPG. Itsuki usually plays girls in games, but for some reason, Chihiro makes out their character to be Itsuki’s character’s little sister, which leads to Nayuta and Miyako also making their characters sisters of the other two. Haruto becomes the GM and does whatever he wants.
Within its boundaries lie 
various ruins and caves,
Unzählige Ruinen und Höhlen sind
im gesamten Land verteilt.
En sus fronteras
hay varias cuevas y ruinas
En sus fronteras
hay varias cuevas y ruinas
Ruines et grottes
parsèment son territoire,
All'interno dei suoi confini
si trovano diverse rovine e caverne
Dentro de suas fronteiras,
temos várias ruínas e cavernas
В его пределах сокрыты
ни одни руины и подземелья,