Such a tough decision. So many different types of themes. I'll go with Natusme Yuujinchou. This anime is my all time inayopendelewa for a reason (story, characters, animation, and MUSIC). All the muziki is so amazing, all the opening and ending songs. But the muziki that is woven within is so beautiful and brings back the memories. <3 The hard swali is, which song to post from this series.