It depicted sehun's growing influence on 4th year.
Spoiler alert - this is gonna bother him till the end to the point of moving yoonshin to a whole another team. He then gets jealous because yoonshin calls someone else "my" manager. (This is way way later in the novel but I love the slow changes in sehunnnieee (づ￣ ³￣)づ)
It depicted sehun's growing influence on 4th year.
Spoiler alert - this is gonna bother him till the end to the point of moving yoonshin to a whole another team. He then gets jealous because yoonshin calls someone else "my" manager. (This is way way later in the novel but I love the slow changes in sehunnnieee (づ￣ ³￣)づ)