Just a few days ago my first book Isekai Monster hit 100 reviews. I also published my 30th book last month.

I put mine, Isekai Monster, on amazon and have been getting a small amount of money each month from KDP. If you want more people to read it a free site would be better, but if not I would recommend amazon KDP. A good number of people write novels that are similar to light novels, but you have to look for them. Here is a link to an author database.

Isekai Monster has a protagonist that has a hidden true personality. While his true self is not sadistic like you want protagonist-kun is a psychopath with not a bit of care for others lives. The main protagonist’s only goal is playing his assumed role in the world, so acting knightly but also brutally killing anyone in his way.

Not cruel but you might like Isekai Monster.

Isekai Monster

Isekai Monster is a dark parody isekai. Humanity lost 90% of the world to demons, after a thousand years of fighting they have reclaimed less than half of what was lost. Even so for centuries the lines have not changed. Both the human and demons are trying their hardest to break the stalemate.

Isekai Monster has the protagonist eventually gathering a harem of religiously devoted women, many of which he does end up having children with.

Isekai Monster has a protagonist that is pathological but pretending to be normal. He has no qualms about killing, but that’s mostly because killing is the norm for the world. Like most psychopaths he is trying to blend into society, but now it’s a completely different society.

In Isekai Monster protagonist-kun’s magic has some negative connotations, so he hides it from everyone.