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.
All of it is possible if 
you defeat Demon Lord!
!سيكون كله ممكنًا إن قمتما بهزيمة ملك الشياطين
wenn der Dämonenkönig besiegt ist!
¡venzan al Rey Demonio!
¡venced al Rey Demonio!
vous devrez vaincre le Roi Démon !
Bon courage, les nazes !
Sarà possibile se sconfiggerete il Re Demone!
...basta derrotar o Lorde Demônio!
вам надо одолеть Князя Тьмы!