What's the oldest manga/anime you remember reading or watching

My most nostalgic mangas are Dadadadan, Beauty Pop and Nekota no Koto Ga Ki Ni Natte Shikatana. i read them about 7-8 years ago.

For anime, it would be Maid Sama, Tokyo Mew Mew, Powerpuff Girls Z, Shugo Chara and Fairy Tail. I used to watch them all on youtube lmfaooo a bunch of websites i used to use are gone now.