the relationship development between Niihama & Shijouin are progressed smoothly and stronger. And you can even called them a couple. But they're yet to confess to each other nor make it official. The reason for that lies in Shijouin Haruka. Haruka is super pure girl that never knew the concept of love. Even tho she read quite a lot of novel, which is weird but not that weird. Her naivety about love are just top notch to the point I consider her weird.

so until 126th chapter, she consider Niihama Shinichiro as bestest friend. The kind of friend that more important than close friend. Tho in several occasions, Haruka seems teasing with Niihama with destructive gesture, but it still not beyond "friend" border in Haruka's understanding. Lmao

Quite disappointing if I must say, but Niihama himself are not in hurry either as he planned his career future in line with taking care of Haruka.

their relationship already approved by both of their parents. In this case their respective mother plus Niihama's sister. Minus Haruka's father that strongly opposed the relationship coz he's s*upid doting father. Lol

so, only Haruka that still not aware of her own feeling. So it'll need a push to make her aware.