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.
Crying to the point of tears was in line with the lyrics requirements. According to the information provided, crying was an expression or display of human physiological emotions. Tears would be shed due to pain or excitement. The tears of crying should contain the subjective feelings of a person. Therefore, crying to the point of tears was a common way of crying.
Slapping the mouth with both hands was a metaphor. It meant that both hands could do the same action, or they could do the same action from the left and right. This metaphor originated from the description in the ancient novel 'Dream of the Red Chamber' and other literary works. In crosstalk and drama, slapping the mouth with both hands was also used to describe a fight or quarrel between characters. To be specific, slapping one's mouth with both hands could refer to a person taking turns to hit his own mouth, or it could refer to a person hitting someone else's mouth with both hands. This metaphor can also be used to describe a person who handles multiple tasks at the same time. In short, slapping the mouth with both hands was a vivid metaphor used to describe doing the same action or doing multiple tasks at the same time.
It's completely wrong. In a healthy marriage, communication is key. If a husband has concerns about his wife's behavior at a party, he should talk to her openly instead of spying. Spying can create a hostile environment in the relationship and make the wife feel betrayed.