Hitotose, Fuku Kumo no Gotoshi

Kaede Momose leaves the hustle and bustle of Tokyo for a new life alone in the mountains. On his first day there, he goes to greet his neighbor and meets Riku Tsukumo, who also lives alone in the mountains. Clean air and mountain fare; so begins a cozy mountain-life romance! (Source: Leed-sha, translated)