Toge Inumaki is important too. His special cursed speech ability makes him stand out. Also, the principal of the school, Masamichi Yaga, is likely to be important as he is in a position of authority and has an influence on Gojo and the other students. There could be other characters like the members of different clans that also play roles in the complex web of the story.
The process of making a hand-made kitchen knife was very tedious and required many processes. First, he had to choose the appropriate knife material and steel material. Then, he clamped the steel bar between the iron and forged it until the overall thickness was uniform. Next, he cut off the excess corners and used a file to correct the shape. Finally, the knife was quenched and heated to make it harder and sharper. The manufacturing process of a kitchen knife with a clip handle was high, but the kitchen knife made was light, thin, and sharp. The specific production process may vary depending on the blacksmith's skills and craftsmanship.
Maybe. If it has characters like a bumbling dad trying to put up Christmas lights or a kid getting into some silly Christmas - related mishaps, then it would be funny. Christmas is a time when a lot of comical things can happen in family settings, so there's a good chance it has some funny parts.