It will end as I predicted, isn't it?

I believe the writer-san failed to build the tension; I hardly got any excited for a new reveal or plot twist because most of them were pretty much predictable. However, I have hope for the last episode; I wish it won’t be as simple and as plain as I think it is. Please let it be worth the while although I am confident it’s Maruyama. I will clap for the writer and bite my own words if I am wrong.