Yuuki asks Rimuru to investigate the Kingdom of Coleus, where a battle for succession has pitted the kingdom's two princes against each other. Rimuru launches a covert operation to sneak into Coleus and find out what's driving this conflict.
The fight is between the older brother, 
Crown Prince Souther Coleus,
المعركة هي بين الأخ الأكبر، وليّ
العهد، ساوزر كوليوس
Ein Kampf zwischen zwei Brüdern.
Der ältere Bruder: Kronprinz Sauzer.
A luta é entre o irmão mais velho,
o herdeiro, Príncipe Souther Coleus,