Mischievous Wizard that burst in H-Unlimited mischief with magical power! ~(ADV)(Japanese)

“I make Harlem! The

hero was one of the heroes who was summoned to another world and defeated the Demon King as a witch, but he was
treated as obsolete by the royal family of the world and was targeted for life.

Although she will escape with the guidance of the princess (Silfina) who feels the grace to the hero, she
returns to this world with the spellbook on the advice of the spellbook .
Although he intends to return to this world alone, Sylphina also comes to this world together.

When I took him home for the time being, my childhood friend (Risa) rushed in immediately, and
Risa who was relieved asked for sex because she did not want to regret it again.
Around the time I finished my first time, a school teacher (duck) visited my house, so
the main character explained what happened in another world.

At that time, it turns out that the different world is a different world of the creative novel written by Risa.
Examining the
spellbook he brought, he called himself “Eromazini” and said that he would bestow color magic, but the main character refused it because of Risa.

Then, the spellbook that had been left unattended for a long time turns upside down and casts a strange curse on the hero.
The hero will follow the guidance of the spellbook to break the curse and master the harem magic.

『オレはハーレムを作り上げる！』

主人公は異世界に召喚され、魔法使いとして魔王を倒した勇者の一人だったが、
世界の王族に用済み扱いされ、命を狙われるハメに。

主人公に恩義を感じている姫(シルフィナ)の手引きで逃走することになるのだが、
魔導書の助言により魔導書と一緒に現世へ帰還。
１人現世に戻ったつもりがシルフィナも一緒に現世に来てしまう。

一先ず自宅へと連れて戻ると、幼馴染(理紗)がすぐに駆け付け、
安心した理紗は二度と後悔したくないとエッチを求める。
初めてを終えた頃、学園の教師(あひる)が家を訪ねてきたので、
異世界での出来事を説明する主人公。

その時、その異世界はなんと理紗が書いた創作小説の異世界であることが判明する。
持ってきた魔導書を調べると、魔導書は自らを「エロマジーニ」と名乗り、
色魔法を授けると言うが、主人公は理紗がいるためそれを拒否。

すると、長い間放置されていた魔導書は逆上し、主人公に変な呪いをかける。
主人公はその呪いを解くために魔導書の導きに従い、ハーレム魔法を極めることになるのだが。