hi, there's more to yandere than ogawa chise and harada. i'm not finished adding but you can start at this page http://www.mangago.me/home/mangalist/69274/?filter=&page=5
So you have read it already? :D How about this one? :3
http://www.mangago.me/read-manga/itou_san_kuraka_sui/
http://www.mangago.me/read-manga/m_nano_baka_nano_hentai_nano/ he's just in general broken...but I'd say yandere... but its played for laughs a bit...
and this one's about a stalker... http://www.mangago.me/read-manga/akutai_wa_toiki_to_mazariau/
yandere yaoi anyone?
(No ogawa chise or harada tho.. )