when they are going for a date? seeing the atmosphere it is not weird if rikka asking yuuta out as thanks for help as an excuse...
but anyway rikka is somehow is immature to develop some level of relationship unless she could resolve her issues...before that yuuta will only become her emotional crutch and that is not good for a long time one...
and for those who interested....swimsuit.... (may you bleed to death...kekeke)