kurofune_shuurai
Oekaki artist in 落書き裏(Rakugaki-Ura) board of futaba channel.
Japanese name: 黒船来襲 (Kurofune Raishuu) or 黒船襲来 (KuroFune Shuurai) (lit. "Black Ship Invasion")
There is no gallery page or data log of his/her pictures.
According to Ascii2D image search, "Bou_(hime_to_usagi)":/artists/29036 once uploaded "one of Kurofune's art series":/posts/463101 to his/her pixiv. (the pixiv post was deleted)
It is unknown whether (s)he is just a fan or really Kurofune.