The phrase "doujindesutvanatanosemenkaishuushimasu" appears to be a stylized Japanese phrase often associated with adult-oriented doujinshi (fan-made works) or specific internet subcultures. Broadly translated, it means "I am from Doujin TV and I will be collecting your [semen]."
「同人サークル『〇〇』です。このたび、初めての漫画『タイトル』を発行いたします。楽しい作品ですので、どうぞよろしくお願いします。新刊開始します！#新刊 #同人」 doujindesutvanatanosemenkaishuushimasu new
This event highlights three major trends: leading to more spam. First doujinshi:
On Booth or Itch.io, let readers pay $0–$5. Many will pay $1 just to support your first work. doujindesutvanatanosemenkaishuushimasu new
: Engaging confirms your email address is active, leading to more spam.
First doujinshi: