Princess LuciaDemon Princess Lucia; Princesse Démoniaque Lucia; Putri Iblis Lucia; Принцесса Люсия; プリンセス・ルシア; 恶魔公主露茜娅; 魔界公主; 프린세스 루시아; Princess Lucia

Koizumi Yuta is a 14 year old boy who has quite a bit of a problem. The demon princess of the magical world, Lucia, has to procreate with him. That child would have the ability to engulf the entire world for 7 whole days. Mikamoto El and Kasukabe Rie are the two angels assigned to make sure that doesn't happen. Kasukabe Rie happens to be the girl he likes. Just how is he going to survive this ordeal?