• Book Name: Aru Hi Totsuzen, Gal no Iinazuke ga Dekita Manga
• Alternative(s): One Day, I Suddenly Got Myself a Gal Fiancée​;One Day, Out of the Blue, I Got a Gal's Forgiving Wife
• Genre(s): Romance Comedy School Life Web Comic Adaptation
• Author(s): Kazuki Izumiya
• Year 2024
• Status: Ongoing Download Manga
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Summary: \"Hey, hey, why are you always pretending to be asleep?\" Miran Katsuki, a positive gal who reigns in the upper class of the school caste, often asks Shuji Nagasawa, an otaku. I was confused by her suggestive behavior, but she unexpectedly announced that she was his fiancee!? A school romantic comedy between two polar opposites, Yin and Yang, has begun!