Day 7 - Infinite song that makes you happy

I think I have to choose two. XD the first one will be Nothing's Over. It gives off a light feeling to me everytime I listen to it. The intro part of the song leaves me reminiscent of something I can't really remember, like I am having a nostalgia at something happy but I can't spell it out in detail. Its MV is also good it really never fails to make me smile (I know this is already cliche but still ;D). I also like their outfits! I really like the colorful pants. Heheheheheh. ;D

Second one is I Don't Know (몰라). You might wonder why, but actually this song was my least favorite on their Evolution album before. But still, it makes me happy because its background music reminds me of O2Jam. Perhaps you can already guess why it reminds me of O2Jam. XD Ahhh, those were the days~ LOL. Whenever I get to listen to it, I always tap my fingers to the rhythm like I'm playing the game. GAHHHHHH it really makes me happy! On a side note, I miss O2Jam though. :'(