枯叶蝶飞不过旧夏天
[kū yè dié fēi bù guò jiù xià tiān]
This name combines two ideas: 'Butterflies' are a common metaphor for the fragility and fleeting beauty of youth or love, symbolized by 'kugyeo (枯叶蝶)' which means a 'withered leaf butterfly', representing a fleeting or vanished moment. 'Old Summer' evokes feelings of nostalgia, implying past love or times that are unreachable now.