Kusahana Ryouta appears to be an ordinary high school student, with one peculiar twist – he constantly dons a full-body dog suit. His routine existence takes an unexpected turn when, by chance, he stumbles upon the belongings of his crush, revealing a surprising item. In a moment of curiosity, he contemplates the scent, only to be caught red-handed by the new homeroom teacher, Kizawa Ayame, also known as Ayane-Chan. Desperate to keep this incident under wraps, Ryouta bargains with Ayane-Chan, offering to comply with any request to maintain the secret. To his astonishment, she proposes a rather unusual favor in return – the opportunity to sniff his body. Thus begins a peculiar exchange between the two.