Review Detail of luksin in Talent Awakening: I, the Weakest Awakened, Start with Dragonfire Spell

The MC is an idiot, first he says he needs to keep his talent rank a secret than in the first chapters he thinks about telling everything to his friends. Then later on he is exposed by another "friend" who he met one day before and just shrugs it off. Seems to me like the MC is trying to act cool and be forced to show off.