I can't say it's love

Ei was abandoned by his lover right before Christmas. He meets a young man named Junpei and his cat (named Yakinori), who manage to soften up the serious Ei's heart. The days are getting merrier and merrier, until Ei's ex-boyfriend show up. What will Ei do? This is a story about healing a broken heart, drawn in a very sweet way to express pure feelings. (Source: AYaoi) Included one-shot: Volume 3: Koi ni Naretara