Spring animation "Kizuna no Allil" A story about the near future where beautiful girls are active in the virtual world.
The more you do it, the more the number of quizzes and the higher the difficulty. After watching the anime and taking the quiz, you are already an advanced tester of Kizuna's Allyl test.
There are only problems that you can't solve if you don't concentrate properly on the anime, so it's an excellent way to kill time and train your brain at the same time. You can download it for free, so put it on your smartphone for now.