Dousei kara Hajimaru Otaku Kanojo no Tsukurikata

The narrator believes an ideal girlfriend would be an otaku with long black hair and shared interests. Kokoro Nishina, the girl he lives with, is loud, fashionable, and far from that image. Despite this, he has promised to transform her into the perfect otaku girlfriend. He acknowledges the need for personal growth in relationships and suspects Kokoro hides fujoshi tendencies from her friends. He intends to guide her into embracing otaku culture, possibly learning from her in return.