Natsuki has the highest register out of all of the members sounding like an extremely stereotypical small tsundare you would find in just about any anime. Like the others, she is retaining her canon age of 18.

Personality wise, she has kept her tsundare streak but for a different reason, not a romantic relationship but rather a siblings one as she is an older sister to a different character in the series (not mentioned here since he already has a VA). She does care for her family and friends but can find it difficult to express that a lot of the time.

Finally, her skill is... weaponry... yeah, bit out of the blue for this one but as I don't want to disclose more story details to the public than I already have the explanation for this will come once the team for the project has been built.