"Issho ni Netain Desuyone, Senpai?" to Amaku Sasayakarete Konya mo Nemurenai

One day, Bakuya Hanzaki, a second-year high school boy suffering from insomnia, meets a junior girl named Kimitori Kobirimaki, who is eating a delicious cup of yakisoba in the park late at night. She says she can help Bakuya get a good night's sleep, and suddenly proposes that he come to her house!?

"Is it weird for senpai to be sniffing around a junior girl's room?"
"Are you staring at my tits?"

Kimitori-chan puts Bakuya to sleep by teasing him while whispering naughty words in his ear, as they spend the night in bed together...!

(Source: Fantasia Bunko, translated)

Note: Winner of the Gold Prize in the 35th Fantasia Taishou contest.