Psychedelic Baby

I thought you just liked the paintings - Kazuki Kaburagi is a magazine editor who handles both work and love in a straightforward way. But then he is assigned to work with the only person in his life he is obsessed with: Ren Tengenji, a genius painter. Kaburagi admires him as his paintings pushed Kaburagi out of his depression, but when they met, Kaburagi finds him to be a natural and carefree guy. As their relationship deepened, Kaburagi wants to keep his distance, but the innocent Ren, who's never even been kissed, gradually falls in love with Kaburagi. But the feelings of "love" weigh on him when he is engaged in his paintings. Envy, longing and obsession - a dramatic love story of the men of art!

(Source: BeBoy Comics DX, translated)