NACR-845 While my brother is away on a business trip, I am at the mercy of my sexy sister-in-law AIK

I'm staying with my brother and his wife while I'm job hunting. My brother is away on a business trip overseas. I'm secretly excited about my brother's wife, Aika, who is a gyaru who wears a lot of revealing clothes. One day, while I was reading a book of pure literature, Aika was interested in the "forbidden love" that was in the book and started to seduce me, but I couldn't resist and got an erection...