君に、胸キュン。-浮気なヴァカンス- (Kimi ni, mune kyun. -Uwaki na vacance-)

Song Meaning

This track captures the electric, almost overwhelming feeling of a summer crush. The narrator is struck by a sudden, intense affection, described as "君に胸キュン" (Kimi ni, mune kyun), which translates to a heart-thumping, fluttery sensation. This feeling is personified by a "浮気な夏" (Uwaki na natsu), a fickle or flirtatious summer, which literally "puts its hand on my shoulder," suggesting an inescapable, intimate presence. The intensity is so palpable that the narrator feels their inner thoughts are easily read, with someone asking, "気があるの?" (Ki ga aru no?) – "Are you interested?" – to a degree that's "こわいくらい" (kowai kurai), almost frighteningly accurate.