That was such a cute origin story, and that edit part got me laughing a little there.
It looks like she could see him really easily since she was curious and had thoughts about finding him. And it seems that she wanted to play/toy around him due to the "sense of superiority" at the start. But at times went on as she observed him, she saw more good sides about him and developed feeling to him. IIRC one of the previous chapters (33) had her noticing him smiling while watering the plants, and I assume he didn't show expressions/emotions usually as that is very Shiraishi-like. Which makes me wonder if there was more to tell before chapter 1 happened 🤔
Or I am just thinking too much lol. Regardless I liked this chapter a lot, gave me diabetes as usual.