I’ve been into anime and manga for years, mostly shonen and some seinen. My favorite arcs are from One Piece and Berserk. I also like following mangaka like Oda and Miura. To keep everything organized, I maintain a sites.google profile sites.google profile where I list my physical volumes and digital reads. It’s not perfect—updating it takes time—but it helps me track what I own and what I’m missing. If you’re into collecting, it might be a useful way to document your own library.