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 as well. - 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 this 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! - !