Not recommended, everything about this is too short or not enough or not thought through. The title is a hook to get people in but they don’t have any depth to it, read book, get spell automatically, oh mc has read all the ones in the library and has 1000+ spells now. They really executed that mechanic poorly, they then tried to get the harem route, but the main characters are 6-8 years old in the story and the mc gets them a house with money he earns. My best description of this story is a small child told a series of random ideas to an adult and they didn’t improve the kid’s story adding random details until they realized they weren’t doing a good job and started added random fan service at the end.