Despite being incredibly shy, Atsuhiro "Akkun" Kagari has managed to win the heart of the girl he loves, the gentle and affectionate Non Katagiri. However, when it comes to demonstrating his love by giving compliments or even just exchanging a kiss, his shyness causes him to behave harshly and even cruelly towards Katagiri in their everyday interactions. Nevertheless, Akkun is deeply in love and shows his affection for Katagiri in his own unique way. He follows her around to capture her picture and listens in on her conversations, ultimately becoming his own girlfriend's stalker. Fortunately, Katagiri finds Akkun's behavior charming and understands that his insults are not meant to harm her. Despite their unusual dynamic, their mutual friend Masago Matsuo is puzzled by their relationship but Katagiri loves her "sweet tyrant" just the way he is.