Trinity Seven OVA 7.42

Other Name: Trinity Seven: Nanatsu no Taizai to Nana Madoushi, Trinity Seven (2015), Trinity Seven OVA, トリニティセブン 七つの大罪と七魔道士

Summary: Arata Kasuga, a high school boy who was living a peaceful life. One day, his daily life disappeared into a different space with his cousin Holy. A mysterious event called the "collapse phenomenon". Arata, who met Lilith Asami, a mage dispatched to investigate this collapse phenomenon, decided to become a mage at the Mage Academy called "Royal Biblia Academy" to which Lilith belongs in order to find a way to regain the disappeared Holy. I decided to walk. Waiting there were seven beautiful girl mage named Trinity Seven. Bundled with limited edition of the 11th compiled volume of the manga.