to reveal one's true character or feelings, often after a period of hiding them
本当の性格や気持ちを明らかにすること、しばしばそれを隠した後で (hontou no seikaku ya kimochi o akiraka ni suru koto shibashiba sore o kakushita ato de)
"He finally showed his true colors when he volunteered at the charity event."
"彼は慈善イベントでボランティアをしたとき、ついに本当の姿を見せた。" (kare wa jizen ibento de borantia o shita toki tsuini hontou no sugata o miseta)
to act in a way that goes beyond moral acceptability
to trust someone enough to tell them secrets
to go beyond the usual limits; to innovate boldly
to be extremely surprised or frightened
to surprise or shock someone suddenly
a shy person who avoids social activities
