With a massive undead army approaching, Seiya dismisses any assistance from Mash, who does not take kindly to the snub. However, when Mash later turns up missing, it is up to Seiya and the others to rescue him from the enemy's clutches.
I'm sure he's all right.
The chances of him being in trouble are low.
أنا متأكدة من أنه بخير. فرص 
.وقوعه في ورطة منخفضة
Seguro que está bien.
Es poco probable que esté en peligro.