Supercopa de Japón
Gamba retained their Emperor's Cup title in 2015 and added the 2015 Japanese Super Cup to their trophy cabinet, defeating Urawa Reds in the final of both competitions, they also reached the semi-finals of the AFC Champions League before going down to Chinese side Guangzhou Evergrande over 2 legs. Konno played 51 times in all competitions in 2015 and scored 6 goals.