i-adjective
sexy yet cute; erotic but adorable
Slang adjective describing someone or something that is both sexually appealing and endearingly cute. Often used for fashion, idols, or characters.
あのアイドルの衣装はエロ可愛いね。
That idol's outfit is sexy yet cute, isn't it?
彼女のエロ可愛い仕草に
Her sexy-but-cute gesture made my heart skip a beat.