The arrival of summer seems to bring everything to life, the taste of ice cream in your hand, the cool sea breeze, and the passionate love we have during the summer days. We want to stretch the summer with image, music, touch, and smell. "Endless Summer Days" includes 4 singles that bring you the dopamine of a summer day from morning to midnight, the blazing sun in the sky, and the breeze in the room. The moment when the wind blows into the room, and you feel the wind chimes and hair, the moment when you look at the pond in the evening and murmur in the evening breeze, the moment when you walk under the neon signs at midnight and feel each other, or the moment when you emerge into your deep memory in the shadow of moon. "Endless Summer Days" combines a various of music styles such as Japanese citypop, Taiwanese pop, and dream rock, making the songs more flexible and energetic.