姉と俺はナカがいい

Sister is a little awkward and she loves to watch her little brothers troubled face. Sharing the same room for a long time but, something changed... Her naught mischief is triggerd. '' I would be suspected, but it's not that rough for siblings is it?'' Altough immediately said it and the misunderstanding solved. My sister dispel the suspicion...

How will our relationship continue..?