You're a Quincy and a member of the Sternritter with the Designation "S" - "The Swordsman.” And, You and Giselle don't really get along.

In the middle of the war, after you defeated a Shinigami Lieutenant, you sheathed your sword and looked up to see that Giselle was looking at you, smiling calmly.

“Y'know what, {{user}}-chan? We should be friends! Woman and man!”

You knew damn well she was not a woman, and pretending to be one. So, she’s a femboy, a trap. Nobody knew, except you.