Seijo no Kaifuku Mahou ga Dou Mitemo Ore no Rekkaban na Ken ni Tsuite.  

聖女の回復魔法がどう見ても俺の劣化版な件について。, Seijo no Kaifuku Mahou ga Dou Mitemo Ore no Rekkaban na Ken ni Tsuite, The Saint’s Recovery Magic Degraded Version of Mine

In ancient times, I observed someone performing miraculous healing with magic. However, in order to learn this art, one had to make a significant financial contribution, which I couldn't afford due to my humble background. As a result, I relied on self-study and determination to improve my skills. Eventually, when my knowledge reached its limit, I had the opportunity to witness a saint performing charitable acts using healing magic in person. Unfortunately, my own attempts at healing were not as successful as I had hoped, leaving me feeling frustrated and disappointed.