Yuuki is saddened by the death of Clayman, and Luminus is saddened by the death of Roy. Steeped in sadness, and having lost their friends, they seek their next move against Rimuru, who has grown in power and become a true Demon Lord.
who happens to be the older twin 
brother of Demon Lord Roy Valentine.
والّذي هو الأخ التّوأم الأكبر لسيّد
الشّياطين روي فالينتاين
Der Zwilling des
Dämonenkönigs Roy Valentine.
el hermano gemelo
del Rey Demonio Roy Valentine.
el hermano gemelo
del Rey Demonio Roy Valentine.
et le frère jumeau
du roi-démon Roy Valentin.
e gemello del Re demone Roy Valentine.
que por acaso é o irmão gêmeo mais velho
do Lorde Demônio Roy Valentine.
Более того, он брат-близнец
Князя Тьмы Валентайна!