to make a sincere promise
誠実な約束をする (seijitsuna yakusoku o suru)
"I’ll never tell anyone, cross my heart."
"私は誰にも言わない、誓って。" (Watashi wa dare ni mo iwanai, **chikatte**.)
to finish something completely
don't make plans for something that might not happen
to change your opinion or attitude
a student who is favored by the teacher
feeling happy or cheerful
to focus on moving forward and not dwell on past mistakes
