Francis Bacon's Love Brain

Uma, a student attending art college, respects Kawaraki as a painter and a professor, but he secretly harbors feelings other than respect for him. Excited by his hips and hands, he draws Kawaraki and indulges in masturbation, and is tormented by guilt. One day, he is caught drawing Kawaraki by Kawaraki himself!? A campus love that is twisted and devoted!

(Source: Cosmic Shuppan, translated)

Note: Includes one extra chapter.