ギャップ萌もえ

noun

gap moe; attraction to a gap between appearance and true nature

Slang from otaku culture; describes finding someone endearing when their behavior or personality unexpectedly contrasts with their outward image (e.g., a tough-looking person being gentle).

• 普ふ段だんはクールな先せん輩ぱいが子こ猫ねこに優やさしく話はなしかけていて、ギャップ萌もえした。

  My usually cool senior was talking gently to a kitten, and I felt gap moe.

• 彼かの女じょのギャップ萌もえポイントは、真面目まじめな顔かおして実じつは甘あま党とうなところだ。

  Her gap moe point is that she looks serious but actually has a sweet tooth.