キュン死 キュンし きゅんし one's chest tightening up (from emotion) so much that one feels one's heart might stop; "dying of cuteness" n vs col Advanced ➥
きゅん choked up (with emotion); heart-wringing; momentary tightening of one's chest caused by powerful feelings (e.g. parting with a loved one) adv adv-to on-mim Advanced ➥