This is Sun Mumu, staring at a loli face but still shamelessly calls him "little brother".
Although she is indeed older than the others, being the same age as Li Zijun, if it wasn't for the relationship with Li Zijun, she would just be like a younger sister. But with that relationship in place, he could only reluctantly accept it.
No choice, since whether in age or relationship, she's his elder.
The group gathered for a small reunion, firstly because they hadn't seen each other in a long time, and secondly to celebrate his big financial success, so today he's hosting, treating everyone to dinner, to have a good time.
After all, he had already gathered with Shen Yi and the landlady once, so of course, he couldn't leave his friends left out.
After the meal, the four of them went for a stroll at the nearby night market. Naturally, the two girls were overjoyed, especially with Sun Mumu, the social butterfly, chattering away.
