Shiru wants to do good deeds every day but wants low risk, high reward.   Then the girls play a game that will change them forever.  Finally, they peak into another word.
When you put it that way, 
I guess you're right, but...
Si lo dices así, supongo que sí, pero...
Dicho así, no sé...
Quando você fala assim
 até parece verdade...