Posted : 2021-04-09 16:34 Updated : 2021-04-09 16:49 Oh Se-hoon, left, of the main opposition People Power Party (PPP), shakes hands with Ahn Cheol-soo, the head of the minor opposition People's Party, at the PPP's headquarters on Yeouido, Seoul, Thursday, after Oh's election as the new Seoul mayor in Wednesday's by-election was confirmed. Korea Times photo by Oh Dae-geun By Jun Ji-hye With Oh Se-hoon of the conservative main opposition People Power Party (PPP) returning to the Seoul mayoral post after winning the April 7 by-election, eyes are now on whether his pledge to "jointly operate the country's capital" with Ahn Cheol-soo, the head of the minor opposition People's Party, will actually be realized.