Facial expressions convey emotions. However, not all people are good at understanding such expressions in daily communication. To address this issue, we herein use "SUGO-MIMI," a lightweight device that does not require a power source to expand facial expressions. SUGO-MIMI expands eyebrow movements by connecting the eyebrows to thin plates, imitating cat ears attached to the headband with wires. As a result of analyzing the facial expressions and questionnaire responses of the participants who watched videos of a person wearing SUGO-MIMI, we observed that SUGO-MIMI can amplify some emotions that are thought to be desirable to express and that females tended to have more positive impressions of the SUGO-MIMI than males. Furthermore, in our experiment of conveying facial expressions, the emotion denoting happiness was conveyed better when wearing SUGO-MIMI.