Bookstores that specialize in Japanese or Asian literature might be a good place to look for 'karakuri burst light novel'. You could also check local comic and manga stores, as they sometimes carry light novels as well. Another option is to look for it on second - hand book platforms if it's not easily available new.
The scariest might be the one about the fortune - teller. She predicted her own death but was ignored. Her ghost now haunts the caravan where she used to tell fortunes. People who enter it feel a sudden chill and hear her whispering future events that never come to pass.
Circus Monster by Vocaloid's story is a blend of imagination and intrigue. It takes you on a journey through a magical circus where unexpected things happen and secrets are unveiled.
Well, for a captivating circus story, you could focus on the relationships between the characters. For example, a friendship between a young acrobat and an old ringmaster who has many tales to tell. Also, add some unexpected twists and turns, like a lost animal finding its way back during a crucial performance.