Ryuu ni Sodaterareta Saikyou: Subete o Kiwameta Shounen wa Ningenkai o Musou Suru - Vol. 2 Ch. 7 - Water Magic Practical

[MangaDex]

 

[cryum]

Friendly competition

Never speak to someone ever again

Lady, you're not helping make a case for humanity.

 

[JBlazer]

Magic or not, theirs was merely an ice sculpture, perfectly reproducible by a pick and chisel.
A living flower, made from water flowing as if it were a river... that is magic art