Engaged to the Unidentified — Season 1, Episode 6: I Know! I'll Fill It with a Sister-in-law

Episode synopsis

Kobeni's mother, Akane, who had always known the Mitsumines weren't human, tells Kobeni that she is no less thankful to them for saving her life. The next morning, Kobeni tries to learn more from Hakuya and Mashiro about their other forms, though Hakuya refuses to transform in front of her. As Kobeni turns her attention towards Valentine's Day, she ponders whether she should marry Hakuya or not. On Valentine's Day, Kobeni tries to work up the courage to give Hakuya some chocolate, but has trouble finding the chance. She finally gets the opportunity after her friend, Mayura Momouchi, comes over.

About Engaged to the Unidentified

Just an ordinary teenager, Kobeni Yonomori receives quite the surprise on her 16th birthday—a fiancé and a sister-in-law she never even knew she had. As a result of an arrangement that her late grandfather made, Hakuya Mitsumine and his younger sister Mashiro have moved from their countryside home to the Yonomori household in order to deepen their relationship with their new family members. This story follows Kobeni's "love life" with Hakuya as she tries her best to adjust to the abrupt changes forced upon her. However, as some extraordinary secrets regarding the siblings come to light, Kobeni will find her life changed forever.

More episodes from Season 1

• E1First Impressions are Everything
• E2A Loli Sister-in-Law Isn't All That Bad
• E3I Can Feel the RomCom Waves
• E4She's Just a Pervert
• E5This Woman Has Given Birth?
• E7That is That, and This is This
• E8Only a Sister can Heal a Scar Left by a Sister
• E9How Humiliating, I'm So Embarrassed!
• E10Looking Up the Term ''Lovey-Dovey Phase''
• E11Enjoying the Handkerchief
• E12Do You Get It? I Get It.