Quick answer — Mana Komatsu voices Raika Meiki in R-15, Hamakaze in KanColle Season 2: Let's Meet at Sea.
Mana Komatsu voices Raika Meiki (R-15), Hamakaze (KanColle Season 2: Let's Meet at Sea).
Raika Meiki is voiced in Japanese by Mana Komatsu.