Clannad, the one where Nagisa Furukawa beats Kyou to become the romantic interest of Tomoya
Golden Time, the one where Banri Tada ends up with Koko Kaga rather than his childhood friend Linda, though they shared a common past
Fuuka, the one with a love triangle where Yuu rejects his childhood friend to date Fuuka instead
Your Lie In April, the one where Tsubaki had no chance against Kaori
Love, Chunibyo & Other Delusions!, the one where Yuuta doesn't end up with his childhood friend, Kumin, but instead forms a romantic relationship with Rikka
Nisekoi: False Love, the one where Ruka despite learning that Kosaki was his promised girl, he ultimately chooses Chitoge
Bokura ga Ita, the one where Yano Motoharu's childhood friend, Yuri Yamamoto, has unrequited feelings for him but he falls in love with Nanami instead