Losing their parents, Fumiko and her brother hop from one relative to another. Getting tired of all those movings, she finally decides to quit school and work to support her brother on her own. As they sat on a park bench, her teacher appears in front of her and agrees to her demanding of marrying and supporting both her and her brother!! Is he serious or just playing around...!?

Kaji Fumino, a young high school student, who was in midst of crisis with her brother, has married her teacher n order to survive!! Although her original intention was to use him, she begins to be attracted to him. As they develop their relationship in the sports tournament, school trip, and firework festival; they face a sudden trouble when Fumino's classmate Kurosawa begins to suspect their relationship...?!

Losing their parents, Fumiko and her brother hop from one relative to another. Getting tired of all those movings, she finally decides to quit school and work to support her brother on her own. As they sat on a park bench, her teacher appears in front of her and agrees to her demanding of marrying and supporting both her and her brother!! Is he serious or just playing around...!?

皆でお出かけデートの帰り道、バイクの故障＆豪雨のため、ホテルに避難した2人。先生に「僕は君が好きだよ」と言われ、初めて過ごす夜は、ドキドキがいっぱいで…。さらに次の日、学校中に2人の噂が飛び交っていて!? 校長室に呼び出された文乃と先生、またまた大ピンチ!!!

Losing their parents, Fumiko and her brother hop from one relative to another. Getting tired of all those movings, she finally decides to quit school and work to support her brother on her own. As they sat on a park bench, her teacher appears in front of her and agrees to her demanding of marrying and supporting both her and her brother!! Is he serious or just playing around...!?

疎遠だった祖父とも和解し、両親の墓前に結婚報告をした二人。が、海外から文乃の叔父・智之が文乃たちと暮らすために帰国!? 先生との別居生活がスタート!! 尾白家に危機到来!? 修学旅行もありでラブ全開のナイショのエンゲージ★ロマンス

高校3年生になり、進路も見えてきた文乃。結婚一周年が近づいたある日、文乃は先生からディナークルーズに誘われて☆ 初キスを狙い大胆に迫る文乃に、先生の理性は崩壊寸前!! ベタ甘デートは非常事態宣言!? 先生の高校時代も明かされる!?

In Gedanken ist Fumino noch ganz bei der romantischen Kreuzfahrt, da geht der schnöde Schulalltag schon wieder los. Doch das anstehende Sportfest holt Fumino schnell wieder in den Alltag zurück, schließlich gilt es, das bislang ungeschlagene Lehrerteam zu bezwingen. Und damit nicht genug, verliebt sich Shoma plötzlich in seine bislang verhasste Schwägerin und mischt Fuminos Leben gehörig auf ...

Eigentlich würde Fumino ja lieber über eine Strategie nachdenken, wie sie Kazuma endlich küssen kann, doch leider stehen schwierige Prüfungen an. Um sich darauf vorzubereiten, nehmen Fumino und ihre Freunde an einem Intensiv-Kurs auf dem Land teil. Und dort erlebt Fumino eine große Überraschung, denn sie macht dort zufällig Bekanntschaft mit Ema, Kazumas Stiefmutter! Wird Fumino endlich mehr über die Vergangenheit ihres Ehemannes erfahren?

Fumino and her 4-year-old brother Teppei have lived with relatives since their parents died in a car accident. Tired of moving from a relative's house to another, she decides to drop out of school and find work to support her brother on her own. As they sit on a park bench, her English teacher, Kazuma Ojiro appears in front of her and her brother. He tries to convince her to go back to school. She jokingly asks him to marry her in order to support her and Teppei, and he agrees. Now Fumino and Kazuma live together in Kazuma's apartment. In school the two keep their marriage a secret from others. This creates some drama in the storyline. The series is mainly about how Fumino and Kazuma's relationship slowly buds.