I'm not perfect.
Barrier Magic (結界魔法, Kekkai Mahō) is a Caster Magic, which involves creation and manipulation of both offensive and defensive barriers.
This magic allows the user to create transparent barriers, which can be used as defensive walls to intercept enemy attacks. Tateshiro is capable of using such barriers to scan surrounding areas and locate various individuals, as long as their ethernano signatures are known. Using unknown methods, the barriers can also be used in an offensive fashion.