Deadly Game: the Monster Who Saves People

What do you want? Wealth? Right? Superpower? Come to me, as long as you come, as long as you are willing, everything you want is here. As long as you sign the contract for this deadly game, it's all for you! But are you really ready? Some things that are out of reach may cost you your life... ... Kakakakakakakaka... Hahahahaha... I just want to save that person. As long as I can save her, I can do anything. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.