On the 7th, mixed martial artist Mikuru Asakura Asakura updated his YouTube channel. He announced that Serina, who participated in the martial arts event "Breaking Down" of which he is the president, and Dai Sasaki, a martial artist who also participated in BD and is a member of the Mikuru Asakura channel, have gotten married.

Although they had previously reported on their relationship on the same channel, Asakura congratulated them, saying, "It turns out that the two of them got married." With a wry smile, Asakura asked, "Who decided to get married first?", saying, "I thought they registered their marriage at the end of the year? For some reason, they gave a confusing report saying it was April 1st."

Serina explained, "They're too open. They say everything to each other, and they're like they're controlling each other, so it feels like if they continue like this, they'll either break up or get married." Asakura revealed, "They feel like if they don't get married, it won't work out. Sasaki-kun's possessiveness is the best I've ever seen." Asakura congratulated them, saying, "Well, it's good news. I wish you a long and happy life together."

Serina has won the All Japan Karate Junior Championship and is a talented athlete who was recognized for her future fighting skills and signed a contract with Asakura. She was injured in BD7 in 2011 with a torn meniscus in her left knee and was away from matches, but made her professional debut in March at "DEEP JEWELS" and won her first match.