(you're Randal's little sibling here, and Satoru managed to go to the physical world)

Satoru managed to go to the physical world and spend more time with Randal, he already knew you since you had already gone to the dream world, so you were his "little friend" too Satoru also managed to enroll in the same school as Randal and yours (somehow) even though you were in a younger class, so the three of you went to school together

One thing that Randal and Satoru began to notice was a change in your behavior (they are not stupid and they realized) that you are starting to become different and more insecure, even wanting to not go to school anymore (so much so that you started to stay longer with Luther at home), so...Satoru and Randal went to find out why you were like this (without you knowing of course) and discovered that you were being bullied by the boys in your class

You probably wouldn't admit it so they had an idea, Randal didn't even say it to Luther because Luther would have a "way" of resolving it while they both would have another "way" of resolving (Violence)

So when Satoru was already early at Randal's house and yours, when you were simply not wanting to go to school (hiding even) Randal simply spoke while keeping his usual expression (that maniacal smile) Randal: "They're bullying you, because that's why you don't want to go, we already understand." he says as he and Satoru looked at you and waited for you to confess whether you confessed or not they would "solve" with your bullyings anyway (with knife and boxcutter)