けっせんとうじつ! (Kessen Toujitsu!)

Background
"Kessen Toujitsu" is one of the tracks for numtack05's Putin-P Series; it is Putin-P's second collab with Shiuka. It was first uploaded on April 26th, and overall has a relatively popular views, with over half a hundred thousand views (in comparison to other songs in the series; though Kienai Hitomi being most notable with 200,000 views).

The song follows Rin as she complains about how Miku isn't the only Vocaloid (just like what she did in the last few songs in the series). However, the truth was, Rin actually envied Miku for being number one, being the idol and face of Vocaloid. Also, Rin mentioned that even though she's a Vocaloid, she also knows 'love'.

The setting for this song is Rin is waiting for Len at the back of the school, and later confessing her feelings to him.