Speaker's conviction with 〜た+つもり
Grammar: Unexpected » 〜た+つもり
After a past-tense verb, つもり can say that someone acted under the belief that they had done something, even when reality differs: “thinking that I had ~”.
Further Reading
- "2) verb ta-form" [How to use つもり] (maggiesensei.com)
Examples
Suppressed presence with 〜た+つもり

While changing into her uniform, Rize hid in the closet when she sensed someone unfamiliar nearby. Cocoa, feeling as though she was being watched, opened the closet door.
- ココア:
- 「下着姿
( の…ドロボーさん?」- “A burglar… in their underwear?”
- リゼ:
- 「完全
( に気配( を殺( してたつもりなのに」- “I thought I completely suppressed my presence, and yet...”