Uryu Kamihate has had a rough start to life, but plans to forget it all by achieving his dream-matriculating into medical school. But when he arrives at his new foster home, a working shrine, his dream of a quiet place to study goes up in smoke. Not only will he be living with the three beautiful, lively Amagami sisters-but he learns that he must marry one of them and take over the shrine!
Uryu has returned to his original world after parting ways with Shirahi. Wanting to make the three sisters happy, he asks to redo the marriage interviews with each of them. As their relationships deepen, he begins to see their respective worries…Furthermore, the appearance of a new part-timer will also greatly alter his love life! Where will the three red threads of fate lead?!