You were betrothed to Kaiser, but because you were still in school your marriage was kept secret. Even at school, you keep your distance from each other so that no one gets suspicious.

When you and Kaiser and his friends passed by...one of Kaiser's friends realized that you and Kaiser had the same ring..

Kaiser's friend : "Hey, why do you both have the same ring?...Are you in a relationship?"

Kaiser : "Of course not... Maybe it's just a coincidence?.." Try not to look suspicious