[glances at him curiously. huh, he doesn't see the humor in it?]

I'm not sure about the 'Toeto' part, but yeah, Luka's a woman with pink hair. The last Crypton Vocaloid made so far... but like I said, she looks a lot older than Miku, Rin, and Len. She can be kind of hard to read...

[affectionate smile]

...but she has a good heart!