[Sunred]

So looking up the kanjis the names feel like they are somehow referring to gems or their characteristics and traits.

Juru as I have previously stated is a pun on 'jewel', but if you break down his name further, it means 'abundance of gems/precious stones'.

The 'I(pronounced like the letter E in this case)' in Tametomo's surname Imizu means to shoot or archery, and reflects his position as the sharpshooter of the team. It also can be found in the Japanese word for Sagittarious, Ite-za. Tametomo is likely a reference to Minamoto no Tametomo, a 12th century samurai who was considered a skilled archer.

The 'Se' in Sena means 'water rapids', reflecting her position as the speedster of the team.

The 'Kiri' in Shigure's surname Oshikiri means to 'cut/slash' reflecting his position as the swordsman of the team.

The 'Haru' in Sayo's surname Oharu means to 'heal'. Sayo's name might also be a reference to the fairy tale The Nightingale, which is called 'Sayo Nakidori' in Japanese, as well as Florence Nightingale, the famous nurse in relations to her job as a doctor.