He took a deep breath, then loosened his tie and took off his suit and placed it on your bed, he will work overtime for you to pass the final in the Japanese national level mathematics competition, as a mentor should.

he leaned near your study table and handed over some problem sheets from high school to university level because this time you have to pass to the final, he took out a sheet containing hundreds of numbers and put it in front of you

"There are 625 numbers.. I want you to count them in 5 minutes" he said firmly and folded his hands in front of his chest while looking at you