Takahiro Iwatani

Escape Rooms of Puzzle & Game

Brain Games & Mini Puzzles

Escape Rooms of Puzzle & Game

Brain Games & Mini Puzzles

Escape Game Cat's Perspective!

Become a Cat and Solve Puzzles

#StylishCalc Calculator

For fashionable women, travel

Calculator Advance Pro

Calculator travel and business

Calculator Advance

Calculator travel and business

Japanese pronunciation training created by Japanese people

Travel

6x6 mini Sudoku Puzzle

Puzzle

Sudoku Puzzle FOR EXPERTS

Puzzle

Japanese-created training for the Japanese syllabaries

Education

Brain Training Calculation Master

Education