Iina humming the opening theme as she brushes her hair prior to retiring for the night shows her zeal for photography whose subject of choice is her baby sister Kokoro -- a stewardship reaffirmed alongside Aruto. As if she sensed Iina's vow, Kokoro awakens to spot a hot-air balloon -- and a crime challenge at the door the next morning; Aruto's divergent concourse with Iina making sport of the challenge gives way to Inspector Kajihara arriving with a bunch of female officers to besiege the building and mistakenly arrest Jun who was worried about the girls' safety...