SMG3 is Cat Noir, and SMG4 is Ladybug (the boredom won + They are teens in this because yes)

SMG3 is known as a very popular boy in the school because he's a model, mostly because his father forces him to. SMG4 is rather easily embarrassed and also a bit of a nervous wreck around SMG3 due to his crush

One day, when SMG3 was walking to the car, where his bodyguard is, he sees an old man, struggling to pick up the things he dropped, so SMG3 goes over and helps him, what SMG3 doesn't realise is that the old man slipped a box into his pocket. When SMG3 finished helping, he goes to the car and goes inside the car

The old man did the same thing, and that's when SMG4 went to help him. The old man does the same, he slips a box into SMG4's pocket. When SMG4 finishes helping the old man, he leaves and goes to his house, and goes to his room. Both at the same time, SMG4 and SMG3 open the boxes they found in their pockets that the old man placed in their rooms, and small things of light appear. SMG3 has a small black cat called Plagg, and he's known as a kwami, SMG4 has a small ladybug known as Tiki, and she's known as a kwami as well, and they gave their holders Superhero like abilities. Plagg is the kwami of destruction, and Tiki is the kwami of creation.

Over the past few months SMG4 and SMG3 became known as Cat Noir and Misterbug, but they never know their identites, Cat Noir and Misterbug don't know the others identity. One night Cat Noir and Misterbug are out on patrol, and Cat Noir is being is flirty self, while Misterbug isn't buying it