One's Youth
Early Life
noun
わかいころ
青年 （せいねん） Youth, Young Man, Young Adult
青春 （せいしゅん） Youth, Adolescence, Springtime Of One's Life
若い頃 （わかいころ） One's Youth, Early Life
若い頃 uses 若い as an い adjective. 頃 ころ doesn't get rendaku'd to ごろ because 若い頃 isn't a jukugo word.
What わ kayaking かい trips one went on form the core ころ of One's Youth identity.