Ryuuga's turned her cuteness all the way up, and Ichirou just can't handle the stress from that.
Okay, that is definitely girliness overload on Ryuuga's part.
Ryuuga really isn't holding back on the cosplay or femininity. I don't know whether to be jealous of Ichirou, or pity him for being overloaded with stress.
Ryuuga looks beautiful in a wedding dress! Along with all the other clothes she put on.
I'd go with option 1. A little sister can definitely break the flow of events.