The King and The Plumber (A Bowuigi fan work)

Following a defeat at the hands of Mario once again, Bowser had given up chasing Princess Peach. He had to focus on his own kingdom and his children. He had to make sure his kingdom thrived of for years to come.
Luigi was content with a quiet life, but with a princess be kidnapped constantly there was no quiet. Accompanying his brother on this rescue, he saw how ruthless he got when he went rescuing. After helping every Koopa on his way, including the one of the sons of the king, Luigi may find something he hasn't found or bothered to look for, and Bowser will learn sometimes being soft for other is the most masculine thing you can do.
All characters used here are owned by Nintendo, I only own the cover art.