"Black as the devil, hot as hell, pure as an angel..." Is that love or coffee?

Kusama Kou isn't sure, especially after he rediscovers that his first childhood crush is now a widowed coffee shop owner by the name of Sakurada.

Sakurada-san's kind, soothing, with an amazing voice, and much older than Kou - i.e. exactly Kou's type. So he wastes no time in getting himself hired part-time at Sakurada Coffee Shop, but is there really any hope for his love to be returned...?