I thought Osamu was on another roof, but I thought Shirona was on the same roof as Hikari and Toma.

[quote]"Is the name of our mutual acquintance Senji? Or did I lure his enemies?" Shirona's voice asked the newcomer in a sing song voice. She is confident that regardless of what happens she could find a way to get out relatively unscathed.
[/quote]

I assume this was in response to Hikari's question

[quote]"Are you perhaps...summoned here by a certain mutual acquaintance of ours, by any chance?" she asked carefully.
[/quote]

[@Aurkanthis]