The Worst Way to Use "Steel Refining" with Polygonum Cuspidatum Hisuhito

I thought I was Winry, the heroine who could accompany you to the end, but I was actually Glid who longed for friends. The small, young, and weak curse spirit said with a smile at the end—— "But, I'm really happy to meet Hisahito..." "As expected, I can't hate humans!" Intention: To give Hisuhito Polygonum cuspidatum an benefit "Steel Refining"