Character profile
Haruhi Inohara
井ノ原春陽Biography
Haruhi Inohara transfers to Junna's school, Sakurahama Private School, and is introduced as his childhood friend. She is very attached to Junna and calls him "Onii-chan."
Story spoilers
Haruhi is actually Junna's sister in the original world and becomes his childhood friend only in the created world. She was not supposed to exist there, but enters it while searching for Junna after his sudden disappearance from the original world.
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