Mekakucity V's is a music video collection of the popular series multi editor creation "Kagerou Project." It includes 13 recorded songs (10 of which were previously released on DVD), and in addition, a bonus MV of Shounen Brave that was made especially ​​for this work.
 
Included four videos are: 
1. Yuukei Yesterday (夕景イエスタディ) original web release August 4, 2013. 
2. Outer Science (アウターサイエンス) original web release August 31, 2013. 
3. Summer Time Record (サマータイムレコード) original web release September 2, 2013. 
4. Shounen Brave (少年ブレイヴ) this was a DVD-exclusive MV.
 
(Source: Kagerou Project Wikia)