Alibi!

Locked Room!

Characterization Trick!

Whydunit!

Unfair!

Cold Reading!

Spoiler!

Reverse Order Mystery!

Humans Aren't Depicted

Non-Euclidean Geometry

Imitation!

The Third Girl!

Who done it?!

Who's the culprit?

Closed circle!

Occult!

The twin trick!

The redheaded trick!

Autopsy!

Detective!

XXXXX but what can we do!

Serial murder case!

Handwriting Analysis!

Poisoning!

Escape game!

Mislead!

Elementary, my dear Watson!

Who done it? (Problem Arc)!

Who done it? (Solution Arc)!

Motive!

Armchair Detective!

Biblio-Battle!

Culprit!

The mystery research society!

Dying message!

Foreshadowing!

Cryptex!

Riddles!

Mentalism!

Substitution Cipher!

Magic!

The first case!

Research on Shirogane Yuriko!!

Hiroshima girl Himawari-chan! (1-3)

Let's become an author!

Accident!

Disguise!

Suicide!

Nursery Rhyme Murder!

Microexpressions!

Favourite book!

Murder weapon!

Birlstone Gambit!

Speckled Band!

Trickery!

And then there were none (Part 1)!

And then there were none (Part 2)!

Hiroshima girl Himawari-chan! (4-6)

All the mysteries have been solved!

False evidence!

Cross Examination!

Trope!

Urban Legend!

Collection!

Missing Link!

Knox's Commandments

Indian Poker!

Detective near Death!

The occult club!

The Watson!!

Afterword

The Fair-Unfair Controversy!

Fake!

Tailing!

False accusation

Hiroshima Girl Himawari-chan

Gotcha questions!!

Stakeout!

Unreliable Narrator (Part 1)!

Unreliable Narrator (Part 2)!

Observation!

Suspects!

Cliffhanger!

The Shirogane Ceremony!

Trial!

Scary stories~!

Installment!

Secret Love!

Locked room continued!

Memory Shrine!

Jury system!

The final test (Part 1)!

The final test (Part 2)!

The final test (Part 3)!

The empty classroom!

A beautiful, talented and mystery-loving high school girl and a younger school boy solve mysteries in their day-to-day lives at school.
