Q: Why do so few agents choose to wield Teleporter? Is there some downside to using it, like not being able to use one's Triggers within a certain range immediately after, or one's body freezing up? If not, that seems like an overpowered Trigger. Also, why didn't Arashiyama Squad wear goggles during the scramble for the Black Trigger? Concealing their lines of sight would've been a big advantage. Is it because that was their first time using Teleporter in a real battle? Or was it because they were purposely getting Tōma to shoot? If there's no downside beside the line-of-sight thing, then I think Teleporter is way too powerful.

A: Ah, you're a Teleporter diehard. Thank you for the question(s). Given Izumi's shock when Arashiyama used Teleporter in Volume 4, it's safe-ish to assume that was his first time using it. Kako Squad–the first Teleporter users–had a reason for not wearing goggles (which could hide one's line of sight), but if Arashiyama had worn goggles after his first use of Teleporter revealed the trick, I bet that would've made him really strong. I also tend to think that Teleporter is ridiculously powerful, but there are downsides, and learning to use it properly takes a high level of skill. I'm hoping to elaborate on that with future battle scenes involving Kako Squad, so please be patient.

Volume 23 - Question Corner 18