Let's break this down from the start. S.I.N., Jared's father's version of HERO, falls short in several ways. While Ella herself is powerful, the organization as a whole lacks strength. Remove her and her students, and what's left? A group that mostly survives thanks to a horde of monsters—yet even those wouldn't stand a chance against a single Level 5 HERO captain.
Now, let's consider the strategic aspect. HERO has been around much longer, with far superior resources, knowledge, and power. From a purely tactical standpoint, it makes far more sense for the MC to leverage HERO to grow as a superhuman, maximize his potential, and only then cut ties when he's powerful enough to stand on his own. Why rely on S.I.N., an objectively weaker group, when HERO offers better opportunities for self-improvement?
There's also the issue of control. SIN members had to make a pact, and Charlie's power is notoriously strong. Unless the MC had significantly leveled up his Memory trait skills, countering Charlie’s mental manipulation would be nearly impossible. We’ve already seen that the MC struggled against Jake’s mental abilities during the prison arc, and they were both just at Level 2. If Jake's mind tricks were enough to affect him, then Charlie—who is likely even stronger—would have an easy time manipulating him.
And then there’s the power gap. MC fighting Nico (Level 5) is already a stretch, but facing five Level 5 captains and their entire teams? That's a death sentence. There’s simply no realistic scenario where he comes out on top unless he undergoes significant growth first.
That said, while I initially had issues with the MC being forced to join HERO after his identity was revealed, this decision makes more sense when looking at long-term consequences rather than just short-term frustration. If the MC exploits HERO’s resources, knowledge, and training to reach Level 5 and awaken THE EYE, then neither HERO nor SIN will be a real threat to him anymore. That would be the ultimate power play.
At the end of the day, though, this is all speculation. We should just let Weirdworld cook and see how things unfold—so for now, hold your horses!