Chairman of the Reinford Group, the biggest manufacturing company in Erebonia, Irina is also Alisa's mother and a ruthless businesswoman with unmatched management skills.

After she forced her own father out of the company and began making weapons of mass destruction for the government, her relationship with her daughter was strained. However, during the civil war, when Alisa and Class VII rescued her, the two came to an understanding.

Since then, Irina has been watching over Alisa's progress as a general manager at the company alongside their maid, Sharon.

However, when her deceased husband suddenly returned as "Black Alberich," the Reinford family's fate began to take an unexpected turn.