The Strongest Man [Crossover]

Proceed with caution: this is an embarrassing old work!!! Chapters 21-33 contain a certain British character's arc, so don't subscribe. Warnings: 1. Regardless of how the power levels compare between the worlds of different works, the teacher is established as the overwhelmingly strongest person in the world. He won't learn any other special abilities; he lets his fists do the talking. 2. The pairing should be Saitama/Genos... I think. There is a pairing, but the romance won't get much focus. 3. The plot may upset some Phantom Troupe fans, so read at your own discretion. If you don't like it, just click away. Don't tell me; I don't want to hear it. 4. The teacher will never grow hair. Premise: