Classmate Who Turns Out to Be a Fiancée.Classmate Who Turns out to Be a Fiancée; 許嫁だと判明したクラスの陰キャさんと仲良くなっていく話; Iinazuke da to Hanmei Shita Class no Inkya-san to Nakayoku Natteiku Hanashi; A Story About Getting Along With a Classmate Who Turns out to Be a Fiancée