Code Geass: Hangyaku no Lelouch - Kiseki no Birthday

Synopsis

Festivities at Ashford Academy are interrupted by a terrorist attack, with students taken hostage by remnants of the Neo-Chinese Federation. Unbeknownst to the attackers, powerful individuals like Lelouch Lamperouge, who wields Geass, and soldier Suzaku Kururugi are among the students. Lelouch and the student council must unite to orchestrate a final miracle and reclaim their school.