Recommend a movie "The Nervous World", which is caused by beans. The most underrated author of Personal Opinion Network. The hero is a psychopath, but after he arrived in another world, he became a powerful mage because of his wonderful brain hole and powerful nerves. This book seems to be his first one, but it's just so-so, but it's getting better and better since the follow-up "The Little Fairy is Poisonous". The latest "Ascending Evil" is also over, and I strongly recommend reading every one.