Ko is in university and Yu is a grad student. And just because they grew up together with an age gap doesn't automatically make it grooming.
*ko(older brother) is grad student, Yu (younger) is also in university. I mixed up the names.
That’s why I asked the question. “Wouldn’t this be grooming?” Hints the “?” But my point still stands it’s weird and the age gap must be huge anyway. Bc in the flash back when they first introduce the older brother was in the middle school uniform while the younger one was clearly a child of age 6-7 years old. They are still brothers and everyone know them as BROTHERS! Even if not blood thats how they were raise as brothers and thats how they see each other since they call each other brothers.
Not only is it his younger step brother. There is clearly a big age gap and on top of that….. since the little brother met him as a child and im guessing yuu was in middle school bc the uniform he would have been 12-15 at the time making the ko what…… 7-10 when they first met. Now yu is in collage and ko highschool. Wouldn’t this be grooming? It’s weird.