Michitaka is My Puppy... Right? ~My Sweet Younger Boyfriend Turned Into a Sadistic Beast~

Synopsis

I, Elena Munakata, have been living with my boyfriend for a year. Michitaka Tamada, my junior from college, is like a golden retriever—friendly and adorable. He used to be hopeless at chores, but now he's a reliable partner who even cooks. Still, his clingy "puppy" side hasn't changed. During the day, I'm the responsible "big sister" and he's my cute "doggy"... a peaceful, fulfilling relationship that I absolutely love. —Until we get into bed at night. Once we're alone, his lethargic daytime persona vanishes. He pins me down and transforms into a "mad dog" who dominates me. Nights spent at the mercy of his sweet commands, my mind melting from intense pleasure... it's not that I hate it. But deep down, a mischievous desire was smoldering: "I want to be the one attacking for once," "I want to mess with this cute puppy." One day, I spot Michitaka defenselessly asleep on the sofa after getting unusually drunk. "Maybe now's my chance...?" I had no way of knowing that a bold prank played on a whim would shake our relationship to its core. Upon learning of my hidden desires, Michitaka makes a proposal with a provocative smirk: "Tonight, Elena-san, you can do whatever you want with me." My first time in the "dominant" role. Can I really take back control and train this mad dog to be my "puppy" again? Or will I be swallowed up by his skillful lead once more...?