Japanese by Example
Learning through examples in manga

Want to say something with ことがある

俺物語!! » Volume 9 » Page 117

Ichinose normally shuns his inferior co-workers. When Rinko starts working at the confectionery, she unknowningly becomes Ichinose’s muse. Even after learning of her boyfriend, Ichinose still convinces Rinko to spend long hours helping him prepare for an upcoming competition. He plans to confess his feelings to Rinko after he wins the competition.

一之瀬(いちのせ):
「コンクールが()わったら()いたいことがある…」
"Once the competition has ended, I want to say something."