變更

耀燮被選為[[Mnet]]的節目《{{link-ko|The Voice Kids|보이스 키즈 (대한민국의 텔레비전 프로그램)}}》的導師之一，該節目參賽者的年紀介於6到14歲之間<ref>{{cite web|url=http://www.allkpop.com/2012/12/b2sts-yoseob-seo-in-young-and-yoon-sang-to-coach-young-contestants-on-voice-korea|title=B2ST's Yoseob, Seo In Young, and Yoon Sang to coach young contestants on 'Voice Korea'|accessdate=2013-11-12|date=2012-12-11|language=en}} </ref> ，他也被參賽者們選為最想要的導師，因為年輕的參賽者們希望能有個較貼近自己年齡而他們也比較熟悉的人合作，因此耀燮才獲選<ref>{{cite web|url=http://www.allkpop.com/2012/12/b2sts-yoseob-chosen-as-the-most-desired-coach-by-the-contestants-of-voice-kids|title=B2ST's Yoseob chosen as the most desired coach by the contestants of 'Voice Kids'|accessdate=2013-11-12|date=2012-12-15|language=en}}</ref> 。10月份開始，固定出演[[MBC]][[實境節目]]《[[我獨自生活]]》<ref>{{cite news|url=http://www.allkpop.com/article/2013/10/b2sts-yoseob-and-jun-hyun-moo-are-joining-i-live-alone|title=B2ST's Yoseob and Jun Hyun Moo are joining 'I Live Alone' {{!}} allkpop.com|date=2013-10-08|accessdate=2017-02-16|agency=allkpop|language=en}}</ref> 。12月，主演音樂劇《[[約瑟的神奇彩衣]]》，並在《[[紐約時報]]》上被提及<ref>{{cite web|last1=Healy|first1=Patrick|title=K-Pop Stars Selling Stage Musicals in Korea|url=http://www.nytimes.com/2013/12/29/theater/k-pop-stars-selling-stage-musicals-in-korea.html?pagewanted=1|website=The New York Times|accessdate=2017-02-16|language=en|date=2013-12-26}}</ref> 。