Lycanthropos no Seijijou

When he transfers to the Beastman Academy, he's in the middle of his heat, and a cat-eared girl begs him for her sperm, leading to insemination sex in the nurse's office! He helps

a senior cowgirl, whose breasts are swollen and dripping with milk, milk her, and then they have sex, impregnating both of them!

(Source: Fanza, translated)

Note: Released at Comiket 106