ループ7回目の悪役令嬢は、元敵国で自由気ままな花嫁生活を満喫する 5 (light novel)

WHEN OLD FLAMES ATTACK! Now that Rishe has resolved the counterfeiting scheme and renewed her vows to Arnold, the couple is all set for their wedding. The two slip away to attend an opera, only for the prima donna to collapse at the start! Later, the distressed diva gushes to Rishe about her knightly paramour, who happens to be a key figure in future-Arnold's plans. Could it be more than coincidence? And why is Rishe's former fiancé here, sticking his nose in her business?!