After his harsh childhood, suddenly becoming an orphan, Aki has found himself to become cold and distant to others and the only person that's been able to get through his tough demeanor and see his real (selfless and tender) side has been his one childhood friend that always stuck by his side through thick and thin, with full honesty always. After knowing each other for so long, they treat each other like family yet he can't help but sometimes wonder if there is something more.