Certified punk rocker!
Bit by bit we're starting to understand the depth of Tsukasa's sorrow. Many cherished and important people through the ages have discovered her secret and dedicated their lives to unsuccessfully help her reaching an impossible goal (and achieveing great things because of it, as a side result). She tries to keep a strong face and hide her suffering to avoid her beloved ones from wasting their lives for her sake time and time again. Every time she slips up and someone discovers her identity the cycle repeats, further increasing her sorrow and despair. She cannot allow herself to confide or vent her emotions with anybody, but some times she just cannot help herself and opens up a little bit...and it always backfires on her.
Cannot help remebering Tokiko's words as she entrusted her big sister to Nasa, saying she "gets hurt easily".