The synopsis and preview images for Episode 15 of the TV anime I Was Reincarnated as the 7th Prince so I Can Take My Time Perfecting My Magical Ability (JP: 転生したら第七王子だったので、気ままに魔術を極めます) have been released. The episode will air in Japan on Thursday, July 24 at 12:00 AM JST, followed by global streaming on various platforms.

Episode 15 Story

After overwhelmingly defeating Jiliel with divine magic, Lloyd finally achieved his long-sought goal of mastering "Shinsei Majyutsu" (Holy Magic). He then returned to the surface and formed contracts with Galilea and the others.
To further his research on Cleansing-Class Magic—especially effective against the undead and spirits—he ventured into the eastern district’s sewers, where ghoul sightings had been frequent, accompanied by Sylpha, Ren, and Tao.
There, a strange competition surrounding Lloyd unexpectedly began.

Introduction

The study of magic requires aptitude, effort, and the right bloodline.

One sorcerer loved magic, despite lacking the bloodline and aptitude for it, and died wishing he’d spent more time studying in life.

He reawakens as Lloyd, the seventh prince of the Kingdom of Saloum, with all his previous memories intact.

Blessed with a strong magical bloodline, he uses his gifts to master the study of magic.

After a victorious battle against Guisarme in the Lordost region, Lloyd’s pursuit of magic knows no bounds.

His next goal? Holy Magic! To learn this sacred art, Lloyd and his companions visit a church, but what awaits them there…?

With over 8 million copies of the original manga sold, the isekai magic battle fantasy anime enters a new chapter: the “church edition!”

Source : I Was Reincarnated as the 7th Prince Official