Derheiden forms in Fukui (福井)福井 as a high school band
V. Kouji (コウヂ) / G. Yuuji (ゆうじ) / B. Takke (たっけ) / D. Gyokusai (玉砕)
The band eventually moves to Tokyo (東京)東京
At some point, Yuuji changes his name to Onii (オニィ)
V. Kouji (コウヂ) / G. Onii (オニィ) / B. Takke (たっけ) / D. Gyokusai (玉砕)
The band changes their name to UMA~幽魔~ and Gyokusai (玉砕) leaves the band. He is eventually replaced by a new DJ, Toto.
V. Kouji (コウヂ) / G. Onii (オニィ) / B. Takke (たっけ) / D. Toto
DJ Toto leaves, as does vocalist Kouji. At some point around this time, the band also changes the typeset of their name to be Uma~ユウマ~ (ユウマ) and ultimately Uma. Takke switches from bass to vocals, and several support members are added. Eventually, another (or the same guy?) Toto joins the band as DJ, but then leaves shortly after as well.
V. Takke (たっけ) / G. Onii (オニィ) / Support B. Mikai (ミカイ) / Support D. Shingo
↓
V. Takke (たっけ) / G. Onii (オニィ) / Support B. Mikai (ミカイ) / Support D. Shingo / D. Toto
↓
V. Takke (たっけ) / G. Onii (オニィ) / Support B. Mikai (ミカイ) / Support D. Shingo
V. Takke (たっけ) / G. Onii (オニィ) / B. Mikai (ミカイ) / Support D. Chizuru (千鶴) → Rami (ラミ)
Vocalist Kouji returns, Takke remains as the band's rapper rather than bassist.
V. Kouji (コウヂ) / R. Takke (たっけ) / G. Onii (オニィ) / B. Mikai (ミカイ) / D. Rami (ラミ)
At some point, bassist Mikai secedes and is replaced by support bassist Ryou. It should also be noted that according to old message board posts, vocalist Kouji had been reported to quit and rejoin the band somewhat frequently by this point.
V. Kouji (コウヂ) / R. Takke (たっけ) / G. Onii (オニィ) / Support B. Ryou / D. Rami (ラミ)
At some point, Ryou is replaced by bassist Jyunji, and vocalist Kouji secedes. Their home page still credits Ryou as part of the band, but doesn't state what role he still played. He reportedly became the band's MC, and Takke had to perform both rap and clean vocal parts.
?. V+R: Takke (たっけ) / G. Onii (オニィ) / B. Jyunji / D. Rami (ラミ) / M. Ryou
Uma disbands
Uma was a visual kei band in Fukui. They were active from 2001 to 2005 and are now disbanded.
I am basing the reading of "火蘭" (I have set it to "Honosusori") on the name of a god as mentioned here: https://kotobank.jp/word/%E7%81%AB%E9%97%8C%E9%99%8D%E5%91%BD-631176.