推理ボーイ - 謎解き×探偵ゲーム

A quick and playable reasoning game! Feel like a detective! Find the contradictions hidden in the story!

Make a deduction with a full-scale case book!
Read the text carefully and point out the strange parts!


The uneven combination is a big success in the reasoning research department! ??
By the way, the two of us got close to each other ... (?)


Will your reasoning succeed?



▼ Introducing some case books

"Broken heart and suicide note left behind"
A man who committed suicide with a pistol because of a broken heart. The message left in the suicide note. However, there is a contradiction in the corpse ...

"Department store indiscriminate murder plan"
A man who plans an indiscriminate murder because of a gambling failure. What is the plan of the horror and a certain crack ...

"The tragedy of the violinist"
The death of a promising young violinist. The testimony of this incident and its first discoverer in a music classroom in a residential area. If you listen carefully to the contents ...?

"Junior high school student in love with a stranger"
A junior high school boy came to the detective agency. He seems to have confessed to the girl, but he was given a piece of paper with a certain code written on it. Can you break the code?

"Gluttony beating case"
A school's gluttony club, the director of which has beaten a first grader. Before the incident, the director had issued a command in the first grade. Why was the director angry?

"Prophecy of Dead Grandpa"
My grandfather died in the hospital room five years ago. I found a prophecy now. I was laughing at the messed up content, but a certain word changed the situation completely ...