Overview
"ロストワンの号哭" (Lost One's Weeping) is a Vocaloid track by the prolific producer Neru, featuring the voice synthesis of Kagamine Rin. The song was originally uploaded to niconico (sm20244918) and quickly gained traction for its biting commentary on the pressures of Japan's rigid education system, school hierarchy, and the emotional toll they take on children, themes that resonate through its aggressive, syncopated instrumental and Rin's strained, raw vocal delivery. The title itself, combining "Lost One" with "号哭" (goukoku, meaning loud wailing or weeping), signals the song's central tension between conformity and emotional collapse.
In maimai, the track arrived during the ORANGE PLUS era on March 19, 2015, slotted into the niconico & Vocaloid category. Its chart lineup has seen one of the more dramatic difficulty escalations across maimai versions: the Expert chart started at level 9 and climbed to 10+ by UNiVERSE+, the Master chart rose from 11 to 13+, and the Re:Master chart jumped from 12 all the way to 14 by the DX era. The Re:Master chart, designed by mai-Star, carries 946 total notes with a notably high Slide count of 162, a signature of mai-Star's charting style on higher-difficulty arrangements. Jack handled the Master chart, also at 946 notes, while はっぴー designed the Expert chart. The song's presence across JP, INTL, USA, and CN regions made it broadly accessible to players worldwide.
Videos
Charts
STD
BASIC
4(4)
215 notesDesigner: -|Tap 196Hold 8Slide 4Break 7
ADVANCED
6(6)
371 notesDesigner: -|Tap 330Hold 11Slide 18Break 12
EXPERT
10+(10.6)
545 notesDesigner: はっぴー|Tap 419Hold 78Slide 38Break 10
MASTER
13+(13.6)
946 notesDesigner: Jack|Tap 828Hold 26Slide 68Break 24
Re:MASTER
14(14.2)
946 notesDesigner: mai-Star|Tap 723Hold 50Slide 162Break 11
Trivia
- The original upload of Lost One's Weeping on niconico (sm20244918) has accumulated millions of views, cementing it as one of Neru's most recognizable works alongside tracks like 'Tokyo Teddy Bear' and 'How to World Domination.'
- The song's achievement titles in maimai ORANGE PLUS directly reference its lyrics: 'おい誰なんだよ' (Hey, who is it?) quotes the opening line, while 'maimaiの譜面は読めますか' (Can you read maimai charts?) and '舞舞←この漢字は読めますか' (Can you read this kanji?) are wordplay on the song's theme of academic testing and reading ability.
- The Re:Master chart (level 14, constant 14.2) was designed by mai-Star, a notes designer known for incorporating dense Slide patterns into high-level charts, this version features 162 Slide notes out of 946 total, a distinctive trait of their style.
- The Master chart by Jack (level 13+, constant 13.6) leans heavily on Tap notes (828 of 946 total), creating a starkly different play feel from the Slide-heavy Re:Master arrangement of the same song.
- The song's difficulty levels have been revised upward multiple times across maimai versions: the Expert chart went from 9 (ORANGE+) to 10+ (UNiVERSE+ onward), the Master chart from 11 to 13+, and the Re:Master chart from 12 to 14. These adjustments reflect both community skill creep and the charters' original design intentions being more demanding than initial level assignments suggested.
- In the ORANGE PLUS era, unlock requirements for these achievements required earning SSS rank on Expert and Master, or achieving 99% SYNC with four players, a nod to the song's recurring question of identity and conformity among groups.
- Neru's production style on this track is characterized by aggressive guitar riffs, rapid-fire synth leads, and a driving 162 BPM beat that complements Rin's pitch-shifted, emotionally charged vocals, a combination that made the song a natural fit for rhythm game inclusion.
FAQ
- Who composed Lost One's Weeping (ロストワンの号哭)?
- The song was composed and produced by Neru, a prominent Vocaloid producer, and features the voice synthesis of Kagamine Rin.
- What maimai version added Lost One's Weeping?
- The song was added to maimai ORANGE PLUS on March 19, 2015, in the niconico & Vocaloid category.
- What difficulty levels do the Lost One's Weeping charts have in maimai?
- The song has five standard charts: Basic at level 4, Advanced at level 6, Expert at 10+ (constant 10.6), Master at 13+ (constant 13.6), and Re:Master at level 14 (constant 14.2).
- Who designed the charts for Lost One's Weeping in maimai?
- はっぴー designed the Expert chart, Jack designed the Master chart, and mai-Star designed the Re:Master chart. The Basic and Advanced charts do not have credited designers.
- What is Lost One's Weeping about?
- The song critiques the pressures of Japan's competitive education system, exploring themes of childhood stress, academic conformity, and emotional breakdown. The title combines 'Lost One' with '号哭' (goukoku, wailing) to evoke a sense of identity loss and suppressed pain.
- Has the difficulty of Lost One's Weeping changed across maimai versions?
- Yes, significantly. The Expert chart rose from level 9 (ORANGE+) to 10+ (UNiVERSE+ onward), the Master chart from 11 to 13+, and the Re:Master chart from 12 to 14. Only Basic and Advanced remained unchanged at levels 4 and 6 respectively.
