Smart people should be aware that the world is flooded with how-to's that can't be helped.Above all, when it comes to SEX, it's the reason why it's overflowing with silly things.There are quite a few brothers who have been deceived and felt bitter.As a matter of fact, I have had a lot of regrets in the past.but!At last, I would say, here comes the wonderful "Book of the Gospel"!That is the [Ikaroi] series!Ikaroi is an abbreviation for Ikase Royal Master.This work is a series in which Ikaroi-kun goes hand-in-hand, goes into detail, and teaches us the secret techniques of making use of it.No, don't get me wrong, Ikaroi-kun is by no means a sex expert!Just like us, he's a very ordinary older brother.Therefore, there is not a single trick that cannot be done without a difficult theory or training! It's true that "if you watch it, you'll definitely get better at H".And there's not a single annoying bit of preachy or boastful boasting!It can be said that this is the completed form of how-to sex that we have been waiting for.Eikawa Noa-chan is a manly active idol, Sato Noka-chan is also a naive active idol.Both of them have a secret trouble that their popularity will not explode.Yes, as you can see by now, the cause of this trouble was the "lack of sex appeal" born from the fact that they "don't know men."That's where Ikaroi comes in.Similarly, this is Mei Uesaka, an ordinary woman.She is a pitiful girl who has never been with her boyfriend.So, the introductory part is to visit Ikaroi-kun.Immediately, Ikaroi will try how-to.And, what do you think, Mr. Uesaka will finally reach the culmination of not only her first orgasm, but also her menarche (it's Hatsushio!).This is how we have been waiting for a long time, How to SEX! !From tomorrow, you will join the ranks of Ikaroi! !