Magic Maker Isekai Mahou no Tsukurikata

A man obsessed with magic is reborn into a new world where magic is possible…but he’ll have to figure out how to make it work. The light novel that inspired a manga (also from Seven Seas) and anime!
Shion finds himself reborn into another world with high hopes of being able to use magic. Just one problem—magic doesn’t exist in this world. Or does it…? Shion’s beloved older sister Marie shows him one day that all hope may not be lost when she brings him to a mysterious pond. At first the siblings are wary, but Shion and Marie soon discover this pond can hold a powerfully magical punch! With Marie at his side, Shion embarks on a journey he once thought only possible in dreams: harnessing the power of fire, lightning, sorcery, and enchantment.

[From Seven Seas Entertainment]