Well an episode with some funny moments. Definitely Aoi coming in during the compromising scene with Hinako (which you just knew would happen) brought some laughs. Was interesting to see the crush start and work through the episode right to confession. Not sure how much of a role Hinako will play but hope she doesn't just vanish into the abyss.
Can understand Shuu in wanting the opposite of his sister. After all don't think he could survive a temperament that is along those lines
. An important lesson to be followed is always make sure to be soft spoken when saying anything that could get a short tempered twin on your case.
Also found the preview well done. (Go Rika!)