I'll have to read it then, but "emotionally weak and delicate" for a protagonist might not have as much of an appeal for some people that I was able to recommend OPM for. Some people are tired of those protagonists.
Mob is physically delicate, and his personality is "weak" in the sense of not having much presence, strong opinions or lofty goals. But he is not a whiner, a coward or a quitter, which to me are the tiring stereotypical "weak protagonist" properties.