Peter Grill to Kenja no Jikan  

Peter Grill and the Philosopher`s Time, ピーター・グリルと賢者の時間, Peter Grill and the Philosopher's Time, ピーターグリルと賢者の時間

Peter Grill, renowned worldwide as the world's most powerful fighter, enjoys a content life with his girlfriend, who has been gradually drawing closer to him. However, his happiness is short-lived when he discovers that numerous women seek his genetic material in order to conceive strong offspring.