Koi Kaze - S01

Saeki Koushirou is a wedding planner who helps others celebrate love while his own romantic life is a mess. His parents' divorce left him hesitant to fully commit to relationships, and he hasn't seen his mother or sister in years, living only with his father. After a breakup, he meets a high school girl who stirs unfamiliar emotions in him-only to discover she's his long-lost sister, now moving in with them. But the feelings she awakened in him don't simply fade away.