https://www.dlsite.com/maniax/work/=/product_id/RJ01437206.html

Oh nice, a sequel.
https://e-hentai.org/g/2096474/1962e3d5ef/

Base +2, 9321j +9

[Synopsis]

"Wow... this dick is huge..."
"It's hard, thick and long..."
"I wonder what will happen if this dick goes inside..."
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This is the story of Tachibana Koyuki, a high school boy who was originally small and loved by his male classmates but who is transformed into a woman.
Due to the special condition, he becomes increasingly addicted to the pleasures of the female body...

Base +28