Read the first part of the story.
The Door to Unicorn Village

People sometimes expected Sima and Rohan to act the same because they were twins. And it was true that they both loved reading. But the minute they walked into any bookshop, Sima and Rohan went in different directions. Sima wanted stories about magical creatures, while Rohan found books that explained how trains work.
This time, Sima tugged her brother’s arm before they parted ways. ‘You should come with me. Life’s more fun with magic in it.’
‘I’m not interested in magical stories,’ Rohan said. ‘It’s all fake.’
Sima pointed at a winged creature flying near a lamp. ‘Then why is there a fairy over there?’
Rohan laughed. ‘That’s just a moth,’ he said. ‘I’m going to find a book with something real in it. See you later.’ He walked off.
‘So what if that fairy was only a moth?’ Sima muttered. ‘It looked like a fairy, and that’s what made it fun.’