Artist. The author of original manga series "Atarimae WonderWorld":[https://www.pixiv.net/member_illust.php?id=2632720&tag=%E3%82%8F%E3%82%93%E3%81%A0%E3%82%8F].

Japanese name: 寿 (Kotobuki)
The other name: "buki"
Circle & site name: TINY LIFE (タイニーライフ)
According to other twitter followers, his Kemono Friends 3 account is still in frequent use, but the reasons for why s/he left the art scene are unknown.
kotobuki (tiny life)