It's plot is beautifully woven together and everything feels natural. It's not your typical slice of life anime with all the comedy and all the annoying and clichรฉ tropes. No. If anything, this would be the most "realistic" sci-fi anime you'd ever watch added with natural interaction of the characters. It also deals with serious topics such as suicide and depression in a matured way and shows how to deal with such feelings. I guarantee you, this anime is worth to watch. I usually hate anime less than 20+ episodes but this one was worth it. Definetely.