Much as Superboy's debut in "Adventure Comics" depicts Clark celebrating his tenth birthday, "New Adventures of Superboy" #1 features Clark celebrating his sixteenth birthday and includes a flashback to Clark's first days as Superboy at the time of his eighth birthday. Later issues of the series continue themes from Superboy's earlier runs in "Adventure Comics" and "Superboy." For example, Superboy first meets a teenage Hal Jordan (Green Lantern); his Earth-Two counterpart, Clark Kent (Kal-L) as a teen; and Toby Manning (the villain Terra-Man) as a boy in the Old West, all years after his first "adult" meetings with them were published. In a backup feature entitled "Superboy's Secret Diaries'", the new series also explored Clark's first couple years as Superboy. Another milestone for young Clark was the introduction of Lisa Davis, a romantic interest who was attracted solely to Clark Kent, with no idea whatsoever of his secret identity (as opposed to Lana Lang's on-again, off-again suspicions of a Clark-Superboy connection); the two would appear as a couple until the series' end. "The New Adventures of Superboy" lasted 54 issues, with the final issue published in 1984.