Hi-Five Radio♪ is an internet radio program hosted by 5pb. that airs on an infrequent basis. In Hyperdimension Neptunia, When the player finishes an optional quest, a new message can be seen in Hi-Five Radio, which can be viewed in the Explore tab. When accessed, 5pb. introduces herself at first and then shares the messages she received. At the end of the message, the sponsor of the message will be announced. The sponsors are random, from "Lady White Heart" to "Compa's grandpa". Up to two messages can be viewed per access. When there are no messages left, Hi-Five Radio♪ is inaccessible except through the Tomes section in the pause menu, where previous messages can be re-read.