Yeah... I think the last two season good, but is very fast. In the last season, I see all the relationship back of the backdoor history, but the same of the 4th season, in the last, Retsuko meeting other problems and not have solution, for example, the relationship Haida with your family ou the Restsuko's family. This questions, I think important for the characters, the history is good, have problemass socials or a part os society where for more ignorate. In all, I think good the anime, but do not wait for the solutions or a very history, this anime is enjoy for watching in Sunday without compromissions.