Kijima-san, who can hear people's inner voices, and Yamada-san, whose inner voice is very loud. Kijima-san happened to hear Yamada-san's inner voice gushing about her love everyday at work. As time passed, he was charmed by her bright and warm personality. He can hear her heart, but he can't proceed. However, he can't hold back his feelings! A blossoming romance can be heard!!!

Acting cold while pampering you, that's a tsun-sweet boyfriend. My dishonest boyfriend always teases me a little, then spoils me a lot. Living with such a boyfriend, my life is full of surprises but overflowing with happiness…!

Bubbly girl Aizawa Yume gets to know the cool boy in her class, Kashiwagi Kou — who tickles her nose with a sweet scent and only smiles from time to time. Yume gradually develops feelings for Kou-kun… but one day after school, she catches him with…?!