Which chapter does Reika-sama meet the heroine? I’m specifically looking for the scene where Reika-sama is eating street food and meets the heroine on the street.
Because there are no chapter titles, it's too difficult for me to find. I just know that it should be in the High School First Year Arc
Try Kenkyou 148. Onii-san yamete has an index that breaks it down by year, which makes zeroing in easier: https://oniichanyamete.moe/index/kenkyo-kenjitsu/