Soitogete, Ryuujin-san

These days, dragon shifters are a dime a dozen. While high school student Murasaki is walking home, a dragon shifter named Tsukumo drops from the sky and lands in front of him. Tsukumo has no place to stay and begs for help, so Murasaki reluctantly takes him home. But, late at night, he cries out of loneliness and attacks Murasaki! A dragon opens his heart for the first time to a lonely high school boy in this heart-wrenching story of two people living under the same roof. Also included is the kink-filled story of an unsociable guy, his eavesdropping coworker, and some stuffed animals!
(Source: Renta!)