ADN-754 Hoshimiya Ichika, a boy who fell in love with a famous writer's mistress

"I can't write... I can't think of anything. The setting... the story! That's it for today! Yumiko, prepare the drinks!" In the past, many writers had mistresses and relationships with them. They would stay at their mistress's house and use her words and actions as material for their novels. Kawanabe Seiichi and Yumiko were in such a relationship... The only person who knows about their relationship is Kiyoshi, the liquor store order boy...