السلام عليكم ورحمة الله وبركاته أحسن الله إليكم شيخنا، Is it permissible to write a fictional story but make it obvious by involving things that obviously don't exist? I have to write a story in my English test.

Ustadh AbdulAziz al-Haqqan

Yes and you can say this is a piece of fiction.