* SourceMusic: Usually provided by Miku--characters will occasionally listen to her songs from the radio or MP3 players during a PV. Although Rin gets a turn with her broadcast of "Assassin!" on TV.

The story centers around the main characters of the series, Kagamine Rin and her love interest Kagamine Len, two Vocaloid programs attending Junior High in Japan. Unbeknownst to the two at first, Rin and Len are reincarnations of a pair with past lives in Russia. As their old memories are accidentally returned to them, they have to deal with the consequences of this past life carrying on into the new one. Along with them is the Vocaloid Hatsune Miku, an idol who also attends Junior High for being held back, and other more malevolent figures from their past lives.

In part due to poor translations of the songs being the most popular in circulation, the series is known among it’s English fanbase for being extremely confusing and zany, with some songs that seem to have been made on drugs (drugs, used recreationally and for a more [[DrowningMySorrows heartbreaking purpose]], featuring in the story adds to this claim.) It features liberal references to Japanese, Russian, and American pop culture with modern-day politics at its forefront. As an example, Ronald [=McDonald=] and Vladimir Putin both feature as prominent characters in the series.

** The first time is in "We Met Again, eh?" which features Camui Gackpo, [[spoiler:who was once Irina's comrade,]] meeting Rin again and remarking on how they've met again. Miku sings her lines [[spoiler:right after Camui shoots Rin.]]

* WhamEpisode: "We Met Again, Eh?" from Part 3, which ends in [[spoiler:Gakupo shooting Rin]] and marks a dramatic rise in tension for the rest of the series.

* Who’s the Liar?
* Don’t Interfere, okay?☆

** Len repeats this mistake in Part 2 as well, [[spoiler:giving Rin her memories back and unwillingly causing her eventual demise.]]

The ''Putin-P'' Series is a song series created by the user Numtack05, or "Putin-P," using the Music/{{VOCALOID}} program. With the first song uploaded in 2008 and the final song of the series uploaded in 2012, the song grew a sizable fanbase and lengthy articles on the Vocaloid Wiki. It’s arranged into four parts, with three albums released that expand on the series with exclusive songs. The majority of the [=PV=] and album illustrations are done by Shiuka.

The story centers around the main characters of the series, Kagamine Rin and her love interest Kagamine Len, as "vocalized androids," i.e Vocaloids, attending Junior High in Japan. Unbeknownst to the two at first, Rin and Len are reincarnations of a pair with past lives in Russia. As their old memories are accidentally returned to them, they have to deal with the consequences of this past life carrying on into the new one. Along with them is the Vocaloid Hatsune Miku, an idol who also attends Junior High for being held back, and other more malevolent figures from their past lives.

* DoubleStandardAbuseFemaleOnMale: Rin's constant beating up of Len is portrayed as comedic and something Len looks back on endearingly by the end. Since they're androids it's probably not a big deal, though.

* RidiculouslyHumanRobots: The Vocaloid characters, who despite being explicitly robots are able to get high, eat, drink alcohol, and get sick.

The ''Putin-P'' Series is a song series created by the user Numtack05, or "Putin-P," using the {{VOCALOID}} program. With the first song uploaded in 2008 and the final song of the series uploaded in 2012, the song grew a sizable fanbase and lengthy articles on the Vocaloid Wiki. It’s arranged into four parts, with three albums released that expand on the series with exclusive songs. The majority of the [=PV=] and album illustrations are done by Shiuka.

* UnwittingInstigatorOfDoom: Len in his past life was this, accidentally triggering the whole tragedy that prefaced their deaths. [[spoiler:As a dog he stole a yellow scarf and was going to show it to Irina, which would have exposed Irina's comrade as a double agent. Her comrade shoots him, and Irina shoots them all as response.]]

* Don't Leave Me Alone
* Together

* End of Discussion!

* The Voice in My Heart

* Illusion Catastrophe/A Place to Chat

* Farewell to You★

* Don't Leave Me Alone
* Unseen Night, The Eyes that Don't Vanish

** The bonus song "End of Discussion" has the characters remarking on their own PV images.

The '''Putin-P''' Series is a song series created by the user Numtack05, or "Putin-P," using the {{VOCALOID}} program. With the first song uploaded in 2008 and the final song of the series uploaded in 2012, the song grew a sizable fanbase and lengthy articles on the Vocaloid Wiki. It’s arranged into four parts, with three albums released that expand on the series with exclusive songs. The majority of the [=PV=] and album illustrations are done by Shiuka.

* {{Yandere}}: Red Rin[[note]]Rin when her speech and/or eyes turn red during a song[[/note]]. In one song she forces Len (at knifepoint) to eat chocolate filled with gunpowder so he gets sick, as just one example.

The Putin-P Series is a song series created by the user Numtack05, or "Putin-P," using the {{VOCALOID}} program. With the first song uploaded in 2008 and the final song of the series uploaded in 2012, the song grew a sizable fanbase and lengthy articles on the Vocaloid Wiki. It’s arranged into four parts, with three albums released that expand on the series with exclusive songs. The majority of the [=PV=] and album illustrations are done by Shiuka.