Academy City SNS Rondo Net

Academy City SNS Rondo Net (学園都市SNS ロンドネット), or Rondo Net (ロンドネット) for short, is a social networking site which appears in Toaru Majutsu to Kagaku no Ensemble.

Principles
Aside from allowing registered users to communicate with one another, Rondo Net can also be used for purchases and acquiring special coupons.

As part of his plan, Pantagruel incorporates a spell into Rondo Net. Following a system update, Rondo Net's user agreement includes a functional magic contract, which incorporates those that accept the agreement into the spell. Upon activation, the spell creates a virtual Academy City on Rondo Net, synchronized with the real one, with anything happening to the avatars in the virtual city occurring to their real-life counterparts. Various effects are also be produced by altering object parameters.

Silver Star Miracle
The Silver Star Miracle (シルバースターの奇跡) is an event that takes place on Rondo Net, ending with the appearance of a shooting star. The true purpose of the event is to allow Pantagruel to summon Aleister Crowley be he dead or alive.