The Anomaly (Tensura X Date a Live)
Due to boredom from work, Rimuru begged Ciel to go out to another world, but when he got to the world of Date a Live, he landed in a massive crater that could only be done by something monstrous, And then Rimuru encountered Mio Takamiya and was turned into a Spirit.
But, actually, it was one of Ciel's plans to teach Rimuru a lesson.
Even after knowing that he was tricked by Ciel, Rimuru still stays in this world to analyze the power of spirits.
Note: It is highly recommended that you watch "Date a Live" and "That time I got reincarnated as a slime" to understand the plot.
[Status]: continuing.
[Posting time]: Random.
