To Aru Kagaku no Railgun - Vol. 10 Ch. 68 - Miscalculation

[MangaDex]

 

[tanukihat]

Ahhh, she was Dolly's friend, and that big jar was full of liquid metal, and she'd make dolphins and stuff appear in it...I wondered why Dolly was so keen on that jar.

 

[This_Is_Fine]

She really took “To fool your enemies you must first fool yourself” literally