Used

Supervised by Japan Common Sense Proficiency Testing Association DS Training of Common Sense Proficiency for Adults Who Can't Be Heard

Professor Ryuta Kawashima, Center for Future Science and Technology Tohoku University DS training for adults to train their brains

Used

Pickled Fish DS training for adults who are not good at English

Used

Supervised by Professor Ryuta Kawashima, Center for Future Science and Technology Tohoku University DS training for adults to train their brains more

Used

DS Eye Training to Train Your Ability to See Through Practice

Used

Soft Atama Juku