As for 25th July 2025, Kuroyoubi continued as an (Synthesizer) Vocal AI band.
Kuroba and CRAY seceded.

CRAY started his own solo project Kurovina (黒雛)
https://x.com/CRAY_Kurovina

what the helly? that escalated quickly

Why do I think the styles of their album covers are so inconsistent? Did they use AI to create the image?

Kuroyoubie first (ONEMAN) live was on 2024/12/06 (FRI)渋谷Star lounge
黒曜日ワンマンライブ (Kuroyoubi oneman live)
『黒ノ乖離世界』 (Kuro NO Kairi Sekai)

LIVE Support members of that day were
サポートベーシスト:霧葉さん
X: EYENeS_Kiriha

サポートドラマー:哲郎さん
X: tetsuro_drum

SETLIST
SE
1.Asymmetry
2.EMPEROR×AI
3.Ephemeral
4.不完全な世界
SE
5.Chatharsis
6.Scarlet dystopia
7.GAMBIT
SE
8.ブロックノイズ
9.深紅アクアリウム
10.忘却と深淵のドレス
11.異次元ニヒル
12.MAYHEM

EN
13.Asymmetry
14.ACID

-黒ノ巡礼-
2025-03-04 新宿ANTIKNOCK
2025-03-27 東高円寺二万電圧
2025-04-24 東高円寺二万電圧
2025-04-28 HOLIDAY SHINJUKU
2025-05-22 池袋手刀
2025-05-27 HOLIDAY SHINJUKU
2025-06-06 池袋手刀 -ワンマン-

https://one-c.info/black/live

LIVE Support members will be again.
サポートベーシスト:霧葉さん
X: EYENeS_Kiriha

サポートドラマー:哲郎さん
X: tetsuro_drum

SETLISTS
2025.03.04 新宿ANTIKNOCK
SE -漆黒-
1.GAMBIT
2.ブロックノイズ
3.不完全な世界
4.EMPEROR×AI
5.Asymmetry
6.異次元ニヒル

2025.03.27 東高円寺二万電圧
SE -Cll-
1.MELT
2.EMPEROR×AI
3.ブロックノイズ
4.忘却と深淵のドレス
5.不完全な世界
6.言霊
MC
7.GAMBIT
8.ACID
9.MAYHEM -Loop-

2025年4月24日東高円寺二万電圧
1.Asymmetry
2.ブロックノイズ
3.深紅アクアリウム
4.不完全な世界
5.ACID
MC
6.Gravity
7.Infinite Echoes
8.異次元ニヒル
9.GAMBIT
10.MELT

2025.04.28 ホリデー新宿
SE
1.異次元ニヒル
2.EMPEROR×AI
3.不完全な世界
4.Gravity
5.GAMBIT
6.ブロックノイズ

2025.05.22 Ikebukuro Chop
SE -Cll-
1.Scarlet dystopia
2.EMPEROR×AI
3.Ephemeral
4.Infinite Echoes
5.異次元ニヒル
MC
6.detoxicant
7.Gravity
8.ブロックノイズ
9.ACID
10.MELT

2025.05.27 HOLIDAY SHINJUKU
SE -Cll-
1.Scarlet dystopia
2.EMPEROR×AI
3.ブロックノイズ
SE -水-
4.Gravity
5.異次元ニヒル
6.MELT

2025.06.06 ikebukuro Chop
01.深紅アクアリウム
02.EMPEROR×AI
03.ブロックノイズ
04.Scarlet dystopia
05.不完全な世界
MC
06.detoxicant
07.忘却と深淵のドレス
08.Infinite Echoes
09.異次元ニヒル
10.GAMBIT
11.Ephermeral
12.言霊
MC
13.Asymmetry
14.MELT
15.Gravity
MC
EN 16.月光
EN 17.碧落
EN 18.ACID

It's only a guess, if Hazuki is really female or not, it's not stated anywhere.

2022-02-00 黒曜日(KUROYOUBI) forms.
2022-06-06 Vo.葉月 & Gt.CRAY announced their new band 黒曜日(KUROYOUBI)
2022-06-06 Release of various 歌ってみた to their youtube.
2022-08-18 [深紅アクアリウム] MV RELEASE
2022-08-24 黒曜日(KUROYOUBI) interview by JROCKNROLL
2022-09-16 [ACID] MV release
2022-09-16 [ACID] MV & digital release [ACID & 深紅アクアリウム]
2022-09-30 [Scarlet dystopia] [detoxicant] [Gravity] LYRIC MV release
2022-09-30 1st mini album [黒ノ断片] DIGITAL release.
2022-09-30 [黒ノ断片] detailed interview by JROCKNROLL
2022-09-30 Official Website open
2022-11-11 [Catharsis] LYRIC MV release

Hazuki is female. This is based on what I've been reading from their previous band "VI". They refer to her as she in different blog and comment posts.

I believe this, but tbh, the Japanese language doesn't have pronouns and automatic translators tend to label anyone with feminine pronouns for some reason, so it's not 100% accurate.

Yes it does, 彼 and 彼女.