What is 1/3 no Junjou na Kanjou?

1/3 no Junjou na Kanjou (1/3の純情な感情) is a song originally by Japanese rock band SIAM SHADE, covered by vocalist 湯毛 (Yuge) for the rhythm game maimai. It is best known as the sixth ending theme of the anime Rurouni Kenshin.

Who composed 1/3 no Junjou na Kanjou?

The original composition and lyrics are by SIAM SHADE. The maimai cover is performed by 湯毛 (Yuge); the arrangement credits are not publicly documented.

When was 1/3 no Junjou na Kanjou added to maimai?

It was added on July 16, 2015, as part of the maimai ORANGE PLUS update.

Is 1/3 no Junjou na Kanjou still available in maimai?

No. The song was removed from all maimai DX cabinets on March 23, 2023, and it was never released in the Chinese version of the game (舞萌DX).

Who designed the maimai charts for 1/3 no Junjou na Kanjou?

The Expert chart was designed by Techno Kitchen, and the Master chart was designed by mai-Star. The Basic and Advanced charts have no credited designer.

How does the maimai edit differ from the CHUNITHM edit?

The maimai version is 1:54, while the CHUNITHM version is 2:30. Both use the same audio source but are cut differently due to differing play times. The chart sets and designers also differ between the two games.

1/3 no Junjou na Kanjou (1/3の純情な感情), maimai ORANGE PLUS

All songs

Overview

1/3の純情な感情 (1/3 no Junjou na Kanjou) was originally released by Japanese rock band SIAM SHADE as their sixth single in 1997 and gained popularity as the sixth ending theme of the anime Rurouni Kenshin: Meiji Kenkaku Romantan. The song was later covered by vocalist 湯毛 (Yuge) for inclusion in SEGA's maimai series, debuting in the ORANGE PLUS update on July 16, 2015. The maimai version is a shortened edit (1:54) of the original, using a different cut from the same audio source as the CHUNITHM version (2:30). Its standard chart set includes four difficulties: Basic (Lv 5), Advanced (Lv 6), Expert (Lv 10) designed by Techno Kitchen, and Master (Lv 12) designed by mai-Star. The Master chart is characterized by dense note patterns and extensive slide sequences. Initially categorized under POPS, the song was reclassified as POPS & ANIME from maimai PiNK onward. When maimai transitioned to the DX series, the song's video was replaced with a static jacket image. The song was delisted from all maimai DX cabinets on March 23, 2023, and was never made available in the Chinese version of the game (舞萌DX). It remains playable in SEGA's CHUNITHM series with a separate chart set and longer audio.

Videos

Expert chart

Open

Master chart

Open

Charts

STD

BASIC

5(5)

160 notesDesigner: -|Tap 150Hold 3Slide 3Break 4

YouTube

ADVANCED

6(6)

221 notesDesigner: -|Tap 208Hold 2Slide 9Break 2

YouTube

EXPERT

10(10)

343 notesDesigner: Techno Kitchen|Tap 249Hold 46Slide 25Break 23

YouTube

MASTER

12(12)

467 notesDesigner: mai-Star|Tap 340Hold 65Slide 46Break 16

YouTube

Trivia

1/3の純情な感情 was SIAM SHADE's sixth single, released in 1997, and was used as the sixth ending theme for the anime Rurouni Kenshin: Meiji Kenkaku Romantan (episodes 67–82).
The maimai cover is performed by 湯毛 (Yuge), a vocalist who has provided vocals for numerous rhythm game covers across multiple SEGA and Konami titles.
The maimai version is a shortened edit (1:54) compared to the CHUNITHM version (2:30); both derive from the same audio master but with different cuts.
In its original maimai ORANGE PLUS release, the song included an Easy chart (Lv 2), which was removed when the game transitioned to maimai DX.
The Expert chart was designed by Techno Kitchen, a prolific chart designer also known for work on CHUNITHM and other rhythm games.
The Master chart was designed by mai-Star, a designer recognized for high-difficulty charts featuring dense slide patterns.
The song's in-game genre was originally POPS in maimai ORANGE PLUS, but was reclassified as POPS & ANIME starting from maimai PiNK.
When maimai transitioned to the DX series, the song's animated video was replaced with a static jacket image.
The song was removed from all maimai DX cabinets on March 23, 2023. It was also never made available in the Chinese version of maimai DX (舞萌DX).
A cover arrangement of this song by VENUS (a unit consisting of Konami sound team members DJ YOSHITAKA and Sota Fujimori) was previously featured in Konami's REFLEC BEAT series from limelight to VOLZZA2.
The song was included in CHUNITHM at its launch, with Basic, Advanced, Expert, and Master charts designed by Rocher@ペンギン and Techno Kitchen.
The opening line '壊れるほど愛しても 1/3も伝わらない' (Even if I love enough to break, not even a third of it gets through) captures the song's central theme of frustrated emotional expression.

FAQ

What is 1/3 no Junjou na Kanjou?: 1/3 no Junjou na Kanjou (1/3の純情な感情) is a song originally by Japanese rock band SIAM SHADE, covered by vocalist 湯毛 (Yuge) for the rhythm game maimai. It is best known as the sixth ending theme of the anime Rurouni Kenshin.
Who composed 1/3 no Junjou na Kanjou?: The original composition and lyrics are by SIAM SHADE. The maimai cover is performed by 湯毛 (Yuge); the arrangement credits are not publicly documented.
When was 1/3 no Junjou na Kanjou added to maimai?: It was added on July 16, 2015, as part of the maimai ORANGE PLUS update.
Is 1/3 no Junjou na Kanjou still available in maimai?: No. The song was removed from all maimai DX cabinets on March 23, 2023, and it was never released in the Chinese version of the game (舞萌DX).
Who designed the maimai charts for 1/3 no Junjou na Kanjou?: The Expert chart was designed by Techno Kitchen, and the Master chart was designed by mai-Star. The Basic and Advanced charts have no credited designer.
What is the BPM of 1/3 no Junjou na Kanjou?: The song has a BPM of 152.
How does the maimai edit differ from the CHUNITHM edit?: The maimai version is 1:54, while the CHUNITHM version is 2:30. Both use the same audio source but are cut differently due to differing play times. The chart sets and designers also differ between the two games.