Yui's way of climaxing is adorable. The more she climaxes, the more she lets out a soundless 'nnn' sound, which is incredibly cute and erotic. Gazing into each other's eyes, as she gently places her hand on the shaft during the insertion scene is also very moving, and the sight of her intertwining fingers while saying 'It feels good, No, I'm going to come' in a voice that sounds like she's about to cry is unbearably cute.
