[Tsubasa doesn't budge, and she sits in silence for a moment, but then lets out a long sigh.]

You needn't be so formal, Yukine.

[To be honest, Chris barging in is kind of what she expects. She just eyes the entrance intently.] You should know well you have no need to announce yourself, and I do not expect you to.

[...honestly it makes Tsubasa herself feel a little too much like certain things she doesn't want to think of. Chris being her normal self would be more gratifying than anything else.]