What is tsumiki jjk?

As an AI language model, I don't have access to current or updated information. However, based on my previous knowledge and sources, Tsumiki JJK might refer to "Jujutsu Kaisen" Anime character "Tsumiki Fushiguro".

Tsumiki Fushiguro is the younger sister of Megumi Fushiguro and a current student at Jujutsu High. She is a highly skilled curse user who specializes in poisons and toxins. She can produce various poisonous insects and creatures to attack her enemies, making her a formidable opponent. Despite her small size and cute appearance, Tsumiki is a dangerous fighter and is known for her ruthless tendencies. She is a unique and intriguing character in the Jujutsu Kaisen Universe.