At the end of April, After School’s three cover photos for the fourth Japanese single ‘Lady Luck’ / ‘Dilly Daily’ were released! Just A Mom Out Here Trying Not To Raise Assholes shirt. This will be a double A-side single (up to 2 songs as the main song) as ‘Lady Luck’ / ‘Dilly Daily’ and has been scheduled to be released on June 13. ‘Lady Luck’ is a song. feminine ‘kira kira girly’ is pure and is the main theme for the commercial plan ‘Samantha Thavasa ALL STARS’. ‘Dilly Daily’ has a more emotional and sexy feel, promoting CF ‘Rexena’ product advertising. Another song in the single, ‘Slow Love’, is no less because it will be the main promotional music for ‘LIXIL Research Eyefull Home’. In June, After School is preparing for a comeback in Korea with new member Kaeun unexpectedly leader Kahi announced to leave the group to pursue his own solo path. On June 17, After School held an encore concert in Japan as the final stage of Kahi as an official member of the group. On June 20, After School released the 5th single “Flashback” with the title song Flashback. In the single, there are 4 songs including: Rip Off (Korean version), Eyeline (Nana solo), Wristwatch and Timeless (Jung Ah ft Raina). The single immediately dominated the domestic charts.