UshinaiP / Negishi Hirosaki

失いP ボカロP インドネシア!
失いP, known as "UshinaiP," represents Indonesian Vocaloid producers, producing songs in both Indonesian and Japanese for his self-titled music label, Vampniotic Records. 失いP has released numerous singles and mini-albums since 2020.

失いP is noted as the first Indonesian Vocaloid artist to focus on creating bilingual music, introducing Indonesian culture and language to the Vocaloid world.

失いP first album, "My Dearest," was released in 2020, followed by his second album, "YUKARIZM," featuring Yuzuki Yukari, in 2021.
In 2022, the J-Pop-tinged album, "LOVARIA," featuring IA, was released to celebrate IA's 10th anniversary.
The fourth album, "OBSCURE ZENITH," featuring Tohoku Zunko, is among his saddest and most haunting.

"VANGSAT" latest album released in November 2025 to celebrate 失いP 6th Anniversary, features V Flower and features a very heavy VOCALOUD & VOCAROCK sound.