Mobile Suit Gundam: The Witch from Mercury

Suletta Mercury, who transferred from Mercury into the Asticassia School of Technology, has lived a school life filled with meetings and excitement, as Miorine Rembran's groom and a member of Gund-Arm, Inc. Two weeks have passed since the incident at Plant Queta and Suletta spends her days at the school looking forward to seeing Miorine again. Miorine, on the other hand, is at the headquarters of the Benerit Group, monitoring her father's condition. The two girls are faced with new difficulties and decisions that must be made. With their own feelings in their hearts, the girls confront the powerful curse brought about by the Gundam.

(Source: g-witch.net, translated)