I think Naiman will convert to Islam because Usman has not called any enemy brave till date
And Naiman has not been seen as cruel like the rest, but has been seen as smart and wise
Orhan’s maiming for no reason and Naiman treating him was all for a specific reason and that is to become a Muslim.

According to my theory, Naiman will convert to Islam, become a friend of Usman, then make Masoud Sultan and kill Alauddin and go back.

There is no surprise in being Muslim from Mongols After Genghis Khan, many Mongol kings and commanders have become Muslims, such as Barka Khan, etc

Zain Alabdeen 🖋️