「ひとりにしないで。」 (Don't Leave me Alone) or more formally known as プーチンP第1部 「ひとりにしないで。」 (Putin-P Part 1 "Don't Leave me Alone.") is Putin-P's first album.

It consist of 11 tracks, 9 published songs from the Putin-P Series (only without Ronald's voice) and 2 unpublished songs. The full version of 4 songs ("All Together!", "It's the End!", "I'm Happy!", and "I'll Give you Chocolate!") are also included in the album.

A crossfade can be heard here (nico video) and was first distributed in VOC@LOID M@STER 12.

Released September 6th 2009
Producer Putin-P
Price 1,000 yen
Illust. Shiuka
Label Independent/Individual
Track list
1. It's the End!
Kagamine Rin
2. Don't Leave me Alone.
Kagamine Rin, Kagamine Len
3. Together!
Kagamine Rin
4. Let's Dream.
Kagamine Rin, Kagamine Len
5. I'll Give you Chocolate!
Kagamine Rin
6. Under the Cherry Blossoms☆
Kagamine Rin, Kagamine Len
7. I'm Happy!
Kagamine Rin
8. Gimme the Handcuffs!
Kagamine Rin, Kagamine Len
9. It's the Start!
Kagamine Rin
10. Tippy-Toe Type
Kagamine Rin, Kagamine Len
11. Big Rush
Kagamine Rin
Putin-P second album
Unseen Night, The Unvanishing Eyes


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