https://x.com/h_si11/status/1882730943330603438

突然で申し訳ないのですが、今日でこのアカウントを削除することに致しました
今まで応援してくださった方々本当にありがとうございました！
イラストの方は別名義で続けるつもりですのでまたどこかで会った時は仲良くしてください🙏

Google Translated:

I'm sorry for the sudden announcement, but I've decided to delete this account today.
Thank you so much to everyone who has supported me up until now!
I'll continue drawing illustrations under a different name, so if we meet again somewhere, please be nice to me 🙏

Nooooo! Unfortunately not too much of a surprise. They liked deleting a lot of their art Tweets shortly after posting. Hopefully, they'll do well on their new account.