Tachibana Hinata and Jinguuji Tsukasa have been best friends since childhood. Now, at 32 years old, they're both average businessmen. One night after a mixer, an entity calling itself a goddess sends them to another world. When Jinguuji opens his eyes, he sees Tachibana, who's been transformed into a beautiful, blue-eyed, blonde girl. Now that the two are of different genders from each other, they're each bewildered by the other's charms. They steel their determination to defeat the Demon Lord in order to return to who they were with their relationship still intact.
For good or ill, I cast this curse which 
shall make you want to save this world!
للخير أو الشرّ، سأضع عليكما لعنة ستجعلكما 
!ترغبان في إنقاذ هذا العالم
Ein Fluch, der euch zwingt,
diese Welt um jeden Preis zu retten!
¡Les impondré una maldición
que los obligará a salvar este mundo!
¡Os lanzaré una maldición
que os obligará a salvar este mundo!
Je vais vous gratifier d’une malédiction
qui vous forcera à nous sauver !
Nel bene o nel male, devo scagliare su di voi una
maledizione che vi farà desiderare di salvare questo mondo!
Pelo bem ou mal, vou conceder uma maldição
que fará com que queiram salvar este mundo!
Хоть стойте, хоть падайте, но я вас
проклинаю — и возжелаете вы спасти мир!