LenPiko

PikoLen is the slash ship between Utatane Piko and Kagamine Len from the Vocaloid fandom.

Canon
Piko and Len are fellow Vocaloid members, which is a program made to sing. Both Piko and Len don't have any canon personality or background, as they are Vocaloids. Depending on the song, they can be friends, enemies or lovers.

Songs
Len and Piko's most popular duet is Shota Shota Island by GobouP. The song talks about how girls like Len and Piko a lot due their "Shota" appearance. The fangirls they constantly take pictures of Len and Piko and even force them to dressing as maids. Eventually, they are bothered because of that.

Other popular duet of the is Daiichiji Jibun Sensou, by Honeyworks. The song talks about Piko encouraging Len to be himself and express what he feels, regardless of what others think. The song After World (by Kannakuzu) talks about Len and Piko spending the night together. They talk about a "she" that is afterworld and is reflected in the sky. It is implied that the song talks about the two remembering a deceased female friend sadly, while feeling that she is still singing with them. The son They Call Me Shooter (by IrunaBara) talks about Piko and Len being tired of adults, thinking that they can't be satisfied because of them. Because of this, they feel like they must fight against adults constantly.

There are many songs where the two are featured alongside other Vocaloids, rather than only the two. Examples of this include It's dark! (by GHOST, with Oliver and Fukase), SHOOT ON TOKYO! (by natsuP, with KAITO, Gakupo, Kiyoteru and VY2), Yume Nakai (by Sakuripa-P, with VY2), etc. There's also a Len song called Labyrinth Butterfly (by NanayubiP) that has a Piko version.

Fanon
PikoLen started due the fact that both are young-looking boys. Despite not being as popular as other ships like MikuLen and KaiLen, PikoLen has a nice amount of follower. It is also pretty popular between the Memelord Squad fans. The ship actually has 50 fanfics in AO3. It the 5th most written ship for Len and the 2nd most written for Piko. The infamous song "Shota Shpta Island" has become a meme in the fandom. There are many posts about Len and Piko don't wanting people to talk about that song.

Variants

 * Memelord Squad refers to the ship between the two, Fukase, flower and OLIVER