ALDN-539 Cuckold sex proxy for sister-in-law Haruko Mita

For some reason, I ended up having to deal with my sister's husband at the request of her couple… 'How did it come to this…?' Akisuzu was bewildered. But there was a reason she had to accept her sister's request. Akisuzu was perplexed by her sister's impossible favor. But to her brother-in-law who needs her, Koharu gradually opens her heart and body. Even knowing it's wrong, she can't resist the pleasure. Before she knows it, Koharu is obsessed...