Clear Radits Assault EX4 of the target Raditz event. Turn around EX2 and EX3 and raise the level.
The level is increased by adding a green freezer for blue radits. In the event mission, it seems that Radits can be put into ◯◯ battle, so Radits are left as combat members.
this
It's just a rising rush and I just beat Raditz. If this is not the case, it will be too poor and likely to clog.