Engaged to the Unidentified

Kobeni has been married off at the tender age of 16 to honor her grandfather's wishes. Not only is her "fiance" moving in with her family, but he's bringing his little sister along with him. Or is it the other way around?

Mashiro becomes terrified of the thought of alien abductions. Benio continues to torment Mashiro with her love.

Benio and Kaguya get to know each other a bit more as they take a trip to the grocery store. Later, Mashiro and Kaguya get a letter from back home, and Benio learns more about her past with her new fiance.

Mashiro finds out about Kobeni's low constitution. Kaguya's speedy escape from a stressful situation leads Benio to question who he really is.

Mashiro and Kaguya's mother comes to Kobeni's house to visit. Things get a little strange when the new guest reveals what her family truly is. Valentine's Day draws near, and Kobeni's mixed feelings toward her fiance to be has her worried.

Kobeni is becomes curious of Mashiro and Kaguya's other forms, but Kaguya refuses to transform in front of her. As Valentine's Day nears, Kobeni's mixed feelings towards her fiance to be have her worried.