Here is the English translation based on your instructions:
The process of defeating Diego went smoothly. Already severely injured on the battlefield by Grant, he was teetering on the verge of collapse due to the magic backlash caused by his failed advancement ritual.
The suddenly appearing Lynch struck him with back-to-back spells, leaving him no chance to resist, and he died on the spot.
....
Several days later, in the Shadow Land.
At the time when dusk transitions to dawn, a thin mist wound gently around, draping a veil over the entirety of the Shadow Land.
"Dong! Dong!"
A few ancient bell chimes echoed, proclaiming the arrival of a new day.
Apprentices wearing cloaks rubbed their drowsy eyes, gradually emerging from their residences, heading to the woodland to gather, to the hunting grounds to hunt, or to their classrooms to attend lectures, thus beginning a new day.
Lynch Mansion.
Inside the mansion, Lynch had risen early — more accurately, he hadn't slept much at all.
