I, Who Peeked At My Father-in-law's Masturbation. Sannomiya Tsubaki

I heard a sound from my father-in-law's room. He still loves his deceased wife and, though a bit clumsy, is a dependable person. That father-in-law was masturbating. And I think our eyes met... Oh no, what should I do... even in this situation, I'm getting excited...