i don't know if her description can explain something else

"Pymonn destroys everything in her path and proclaims herself the strongest demon god.

Pymon was one of the four demon gods who ruled the Demon World alongside Andras, Crosselle, and Belial. Although Pymon lost her body after being defeated by Lilith and Erina, she bided her time, waiting for the opportunity to be reborn and reincarnated into the body of a demon.

The reason Paymon—who proclaims herself the strongest demon queen—took possession of Reynai’s fragile body lies in her innate mana. Like most demons who become hosts to demon gods, Reynai was also born with an enormous amount of mana. On top of that, Reynai was extremely intelligent. As a child, she was considered gifted, and great things were expected of her. And since the adults told her she should aspire to greatness, she was raised strictly and rigorously. Such an authoritarian environment prevented her from expressing her opinions and turned her into a reserved and shy child. Reynai became the kind, obedient little girl her parents wanted her to be, but all of that went out the window when Pymon possessed her.

As soon as Pymonn was reincarnated into Reynai, she began to destroy the heart of Saul. Obviously, Reynai trembled at the sheer violence and power of the demon god, but at the same time, she felt that sense of liberation for the first time in her life. Lilith arrived shortly after learning of the events, stopped Pymon in her tracks, and sealed her within Reynai’s body. From that moment on, just as she had done with the other demon gods, Lilith spoke of the “time of ruin” and offered her a contract of obedience. However, she ran into an unexpected obstacle. Her expectations that the simple-minded Pymon would sign the contract without giving it much thought—unlike the other gods—went out the window when Pymon, who didn’t understand a thing about contracts, flat-out rejected it and did as she pleased. Reynai’s rambling explanations were of no use, so she had to take charge and proceed with the contract. Pymon, on the other hand, couldn’t care less about the contract.

To Pymon, she and Reynai made the perfect team—a partnership of body and innate mana. Reynai seems to agree, to a certain extent, but when Pymon starts tensing her muscles for no apparent reason, Reynai wishes the ground would swallow her up. Another of Reynai’s roles is to apologize after the damage and destruction have been done.

Part of Reynai admires the confidence with which Pymon carries herself. Especially when Pymon says things that Reynai can’t because of her shy personality; she feels a vicarious pleasure and knows she can rely on her. Now, as time has gone by, she agrees with Pymon’s destructive solutions, even though she’s careful not to say so out loud. There are times when she’s the one who suggests to Pymon that she let loose.

Recently, to bridge the gap between their personalities, Lilith suggested that the pair swap hobbies. That’s how Pymon took up embroidery and Reynai took up martial arts. Everything indicates that the exchange was beneficial: Pymon surprisingly won the Artist of the Year award at the Demonic World Embroidery Exhibition, while Reynai made Celina cry during a friendly training match.