Ore no Genjitsu wa Renai Game?? ka to Omottara Inochigake no Game datta

俺の現実は恋愛ゲーム??かと思ったら命がけのゲームだった

A protagonist whose reality turned into game; the power of save-and-load bestowed to him; heroines with different and unusual personality traits. This is a story that turns around the whole concept of a romance game.