Propose Kyodai

This drama is a love comedy that follows 4 very different types of guys who grew up in a very normal household, a first child, a middle child, a youngest child, and an only child. This drama portrays the transformation of the guys as they meet someone and begin to realize their own weaknesses and their strengths, and are able to find true happiness.
Story 1 - How the first child gets married. Main Character - Sato Ryuta (eldest son). Story 2 - How the middle child gets married. Main Character - Koike Teppei (second son). Story 3 - How the youngest child gets married. Main Character - Nakamura Aoi (third son). Story 4 - How the only child gets married. Main Character - Ito Atsushi (cousin of three brothers).
(Source: Fuji TV)