In chapter 1 page 7 , the healer thought she couldn’t look away from hero’s eyes and want to help him. I guess that hero hypnotized the healer to fall in love with him and obey him. She started to gain concious when she was not around him.
I think the story is ok but art (picture) is so so. All characters have big eyes and childish face. The art in novel is much better. You can see from the links below.
https://i0.wp.com/www.whimsicalstargazers.net/wp-content/uploads/2018/11/06.jpg?w=650&ssl=1...
If you look carefully, you can find the official raw. The link is in the TOC page , under description . You can read some raw chapters for free .
Mangadex provides official raw for many manga.