It's not ra**, There was no s**. You CAN classify it as sexual assault but again, not really. We can see that Heeseo wasn't going to do anything if Taekyung really was extremely aversed, he's honestly just testing his limits and boundaries. Remember that he's a kid and he's pulling a temper tantrum because he's embarrassed. For him, all he wants to know is how 'far' he can go. If Taekyung had given him a slap or a harsh scolding, he would've stormed out immediately. Context matters.
Paying tributes, washing my hands at the golden basin.
叫我你大爷，哈-h
叫我你大爷，哈-h
