Washinomiya Yukina from the manga Bijutsubu no Kyonyuu Kouhai ga Nude Model ni Natta Kekka Amari ni Ero Sugite Ore no Geijutsu ga Bakuhatsushita Hanashi (美術部の巨乳後輩がヌードモデルになった結果あまりにエロすぎて俺の芸術が爆発した話) by Kotorakku. Trained for 880 steps from a variety of manga panels. Haven't found any limits on the tests, but was trained on some NSFW so take precautions if needed. This girl is cute.
Prompt:
WashinomiyaYukina,black-framed eyewear, black hair,blue eyes,large breasts