As for Zephyr going mad, Chen Fan told the truth. He had indeed done it. The Rinnegan possessed terrifying Illusion Magic. Chen Fan's Illusion Magic was far inferior to Uchiha Itachi's, but it was more than enough to deal with these Demons.
Over the next three days, Chen Fan had some free time. Every day, he accompanied Rias around her territory, while also training diligently. Yuuto Kiba and Koneko Toujou were training hard as well. Chen Fan had already taught them how to train, and both of them could work hard to improve their strength. Either way was a shortcut to rapidly becoming Ultimate-class Demons.
Faced with an increasing number of dangers, the two of them suddenly felt that their strength was no longer enough. There was no excuse to say that their opponents were too strong; their own strength was simply insufficient. If Chen Fan had not been there, there was no telling what the situation would have become, but it certainly would not have developed in a good direction.
Genoa was also strict with herself. To the Genoa of the past, Demons had been enemies to defeat. She rarely went out in her daily life, but after coming to the Underworld this time, she discovered that there were quite a few powerful Demons there. It gave her a slight sense of crisis. Aside from speeding up her plans to have babies with Chen Fan, she worked hard to train and strengthen herself.
Aisha was learning how to use magic from Akeno Himejima. Three days passed in a flash. In order to fight the terrorist Group of Calamity, Sazex had also invited several highly influential people to watch the battle.
Azazel, the Governor-General of the Fallen Angels, had always enjoyed researching Sacred Gears. Since the object of his research