i'm in my late 30s and married my childhood friend, who is younger than me. unlike me, who is eager to have children, my wife won't respond to my nighttime activities because she's busy with work. in the end, she just said that if i endure for a month, she'll do it. and a month later, i couldn't even have sex with my wife, so i was visiting my parents to celebrate my sister-in-law, ichika's, marriage. while suppressing my explosive libido, my sister-in-law, ichika, came at me repeatedly with a mischievous smile…
