1+1=2
快开学了，得爆肝一下
网易云：http://music.163.com/#/m/playlist?id=412748366&userid=47802624
Bilibili：http://www.bilibili.com/video/av8393304/
图: http://icarus.silversky.moe:666/illustration/49065
pixiv: http://www.pixiv.net/member_illust.php?mode=medium&illust_id=61182689