TUXEDO GIN (Takishido Gin), by Tokihiko Matsuura. First published in 1997 and first published in North America in 2003.
PLOT:
When Ginji Kusanagi saw Minako Sasebo, it was love at first sight. He certainly didn't expect a girl like her to accept a date from a rough-looking kid on the verge of his pro boxing debut like him, but a motorcycle accident kills Ginji the day before that date can take place. An angel gives him a second chance, but in order to get his body and his life back Ginji must live out a second life as a penguin.
Things don't get easier for the newly dubbed "Gin" as a penguin. No sooner does he manage to escape his aquarium home than he has to deal with the goons who caused his killer accident, Minako getting kidnapped, and a rich rival who's determined to make Minako his.
