Shinsuke and Shakugan are staying with Jinka and Tama, but Shinsuke isn't learning much in the way of fighting skills. Instead, Shinsuke is left behind to do chores when Tama and Jinka are informed of trouble with a local katawara.  
Makes sense that it'd work 
the other way around.
.من المنطقي يحدث العكس أيضًا
Perciò è naturale che
possa avvenire anche il contrario.
Se vale pra um, vale para o outro.
Логично, что бывает и наоборот.