The narrative follows the "commoner" protagonist, Kimito, who is brought into a high-class academy environment where the female students have been largely isolated from the modern world.
On the other hand, the phrase can also be seen as a way of acknowledging the pressure to conform to social norms or expectations. By downplaying one's genuine interest or excitement, the speaker may be signaling that they're aware of the cultural significance of the place or thing, but are hesitant to express their true feelings. shinseki no koto otomari dakara
– A detective might say this to a witness: “Regarding the relatives – stop (asking / investigating).” Implying the relatives are not to be discussed, possibly due to a secret. – A detective might say this to a
It could be a gentle but firm boundary-setting phrase. The narrative follows the "commoner" protagonist