What Leon did with that one idol group... Actually, what happened during the MEANS Hypnosis App Catastrophe. It caused unrepairable destruction throughout Japan and everywhere else. It exposed the ugliness of humans under pressure, the frailness of societies living on the knife's edge, and the truth about much harder it is to sacrifice and rehabilitate than it is to just punish everyone involved.

This story ends with Himiko confronting her past; and then said ugliness, frailness, and truth.

Chapter 1: https://e-hentai.org/g/3068358/66db3c1959/
Chapter 2: https://e-hentai.org/g/3175267/a05f0f5f81/
Chapter 3: https://e-hentai.org/g/3378497/3e252ffeaf/
Chapter 4: You're Here.

Koikatsu cards are at https://db.bepis.moe/user/view/5279.