After last week's shenanigans, Mitsuki is keen to get to the truth of what her sister Yuu is up to with Haruka, having (quite rightly) not bought the whole "I fell on her" excuse offered up after catching them together in Yuu's room.
To this end, Mitsuki employs the pair's classmates Kaede and Mikan... sorry, Yuzu... to do a little spying before reporting anything out of the ordinary back to her