Sekaiichi Kantan na Heroine no Kouryaku Shikata
世界一かんたんなヒロインの攻略しかた
The protagonist has a simple wish—to possibly date Himeno Miina, the girl he admires. Unexpectedly, the girl herself appears as his supporter. When a mental entity separates from her actual body, he must conquer his heroine to restore her other personality back into her original form. The story includes an epilogue in its chapter count.