It's an improved version of the Type 2 yellow plane for CVBs. In situations where you would use a Type 2 (together with a Saiun) for 100% contact chance and you are using a CVB, this plane would be a good choice. Else than that, it's useless, apparently.
About Teruzuki, yeah, in some situations, she can be very useful. But still, she's always 2nd in line after Maya. About cuteness...guess that's subjective^^