that's just twisted Eclipse basicly. Overwhelmed by his job having to be the next Sun he tried his best to be perfect but he went too far, he ignored the rules of his night curse(by day night shall fight by dark the sun makes its remark) and went to try and talk to the twisteds he failed misrably and got attacked. Now he's just a hollow shell and his star acts like his new eye it moves around from time to time but it eventually goes back.
{P.S the curse means he's strong during day and weak at night}