Writing a review having only read the available 5 chapters is obviously foolish, but eh, what can you do.

The novel has a very interesting beginning but I would advise anyone starting it to not read. This is a 700 chapter ongoing novel that is being translated at 1 chapter per 2 days, and sometimes the translator even splits chapters into two parts.

So in the worst case you get a chapter per 4 days. In a 700 chapter novel. Not to mention the translator constantly takes a break for whatever reason... more>> he feels like doing so.

I realize NU guidelines do not permit speaking about the translation but as English readers the translation is inseparable from the novel since it's how we interact with it.

And if you have an addictive personality regarding webnovels, this will be difficult for you to read. <<less

One of the best R18 novels, ranked 9th all-time in Novelpia with over 18M (!) views.

Our MC, originally a genius mathematician. After being discharged from the army at the age of 23, while on a plane to the United States in order to go back to MIT, the plane crashes in the middle of the Pacific due to a malfunction into the witches city which is a secret city on modern earth, there he gets kidnapped and ens*aved.
Over 5 years he learns magic in secret (he succeeds because the... more>> magic is similar to math which he knows very well), in order to escape and thus become the only male witch in the world.

-Actual good plot for an R18 rated novel.
-Author's writing style is immersive, amazing world-building
-Good action scenes- MC is strong but not super op
-Good and well-written R18 scenes
-Good characters interactions
-The characters are well made, lovely and each with different background and personality:
A witch who has been obsessed with our MC for 5 years but can't express her love, curious twins disciples, and more.

Con/Pro:
There are quite a large amount of s*x scenes in the first 100ch (~40% of chapters are R18) but it balances better after that to about ~20%. <<less