If he really wanted to save his sister he could've taken her into the tower any run away, that's the safest choice, he had 4 hours.
I think I see another lapse in logic⌠đ¤ since he had to practice his skills to familiarize himself with them, I think itâs safe to say that they arenât the instant enlightening/ disposable type. Since he lived ten years in this game world I think itâs also safe to assume he has memories and experience from that time. If these assumptions are true, why canât he just use his previous skills from before he slipped into the past? If itâs not possible without the skill scroll đ⌠his previous experience should carry over at least, right? Ten years of battle experience, ten years of meditation experience, ten years to get desensitized to the way of the world⌠Iâm not seeing it.