Responses
Do you mean second lead?
if yes , i remember two manga..
http://www.mangago.zone/read-manga/love_survival/
and
http://www.mangago.zone/read-manga/hirunaka_no_ryuusei/
Hirunaka no Ryussei.
is there a shojo where the main girl ends up with the third party?! i would love to read something like that!