Koi Kaze

Koushirou Saeki works as a wedding planner, but his own romantic life is troubled. As the child of a divorced couple, he lives with his father and hasn't seen his mother and sister in years. A chance encounter with a young high school student sets him reeling, but it's later revealed she's actually his long-lost sister, who will be staying with them. This unexpected development complicates Koushirou's emotions.