"I love you. Please go out with me――." The protagonist, Haruchika Isezaki, is summoned to another world right in the middle of confessing to his first love. The summoner is the goddess Clementine. The task she imposes on Haruchika is to make seven young girls, who will become the mothers of the next generation's hero party and have lost their capacity for love due to the Demon King's curse, fall in love...! In other words, he has to make them fall for him!! Haruchika accepts the mission in order to return to the real world and hear the response to his confession. The love story of world salvation begins now, led by a man who has mastered all forms of psychology and become a love master to make his first love come true――!!