Artist, a Yamaha Majesty rider.
Japanese name: ゆぐらん (Yuguran)
Old name: スペクス (Specs)
The other name: むへぇ (Muhee)
https://www.pixiv.net/users/547583
https://www.pixiv.net/stacc/grampuspecs
https://twitter.com/yuguran
https://twitter.com/intent/user?user_id=217870564
https://seiga.nicovideo.jp/user/illust/2770817
https://seiga.nicovideo.jp/user/illust/8686315
https://www.nicovideo.jp/user/2770817
https://www.nicovideo.jp/user/8686315
