The Kiznaiver site just posted the official flowers the girls are holding and confirmed their meaning will help us better understand the series.
Nico: Agapanthus434Please respect copyright.ＰＥＮＡＮＡEciBOs6F0T
Honoka: Zinnia434Please respect copyright.ＰＥＮＡＮＡNkjY423CJR
Chidori: China aster434Please respect copyright.ＰＥＮＡＮＡUX5hQNJNnA
Noriko: Roses
So I did some Hana kotoba google’ ing. Here’s a brief (second) look at their meaning below the cut!
Nico
The Agapanthus is known as the “flower of love”. Its meanings include 「the arrival of (romantic) love (恋の訪れ)」, 「love letter（ラブレター）」 and 「intellectual attire/guise （知的な装い）」. It’s said that this last meaning comes from the refreshing and delicate appearance of the pale purple/blue flowers. 434Please respect copyright.ＰＥＮＡＮＡTJSvjIgIBs
Source: [x]
Honoka
「thoughts of absent friends（不在の友を思う）」434Please respect copyright.ＰＥＮＡＮＡDhVjtgyu1X
「I mourn your absence（あなたの不在を悲しむ）」434Please respect copyright.ＰＥＮＡＮＡMEgctZYkk7
「Don't be off your guard (注意を怠るな)」434Please respect copyright.ＰＥＮＡＮＡXpeZdptHMC
Source: [x]
“Thoughts of friends or thoughts of a missing friend are the most common meanings for the zinnia.“ Yellow zinnias mean “daily remembrance”.434Please respect copyright.ＰＥＮＡＮＡzieJejIb9V
Source: [x]
Chidori
General meaning:434Please respect copyright.ＰＥＮＡＮＡL8eEPnOUFv
• 「Change (変化)」434Please respect copyright.ＰＥＮＡＮＡEN3rehFDQ6
• 「Reminiscence (追憶)」434Please respect copyright.ＰＥＮＡＮＡOs7O4Ffhtf
• 「Agreement / Sympathy (同感)」434Please respect copyright.ＰＥＮＡＮＡ74jBUJcNLw
• 「Belief in (romantic) Love (信じる恋)」
Occidental meaning:434Please respect copyright.ＰＥＮＡＮＡGtPDu6VZVp
• 「Variety（多様性、変化）」434Please respect copyright.ＰＥＮＡＮＡjkrjZprzmh
• 「Fidelity（忠実、貞節）」434Please respect copyright.ＰＥＮＡＮＡ9s4JFQWmi5
• 「I will think of you（私はあなたを想うでしょう）」
Color meaning:434Please respect copyright.ＰＥＮＡＮＡXUBvnUxp7A
• White: 「Please believe me (私を信じてください)」434Please respect copyright.ＰＥＮＡＮＡ8JaIugtuRh
• Purple: 「Victory of (romantic) love (恋の勝利)」, 「My love is deeper than yours (私の愛はあなたの愛より深い)」434Please respect copyright.ＰＥＮＡＮＡekHCa555jE
Source: [x]
Noriko
It’s hard to tell whether Noriko is holding orange roses or yellow ones, so I’m including both!
General meaning:434Please respect copyright.ＰＥＮＡＮＡekQopmzPb0
• 「Love (愛)」434Please respect copyright.ＰＥＮＡＮＡRKwt3WxgLC
• 「Beauty (美)」434Please respect copyright.ＰＥＮＡＮＡEJjv0OXyFD
Source: [x]
Color meaning:434Please respect copyright.ＰＥＮＡＮＡsgU9PaaXTf
• White: 「 Purity / Chastity( 純潔)」, 「I am worthy of you (私はあなたにふさわしい)」, 「Deep respect (深い尊敬)」
• Green: 「Calm / Gentle (穏やか)」, 「You can have hope (あなたは希望を持ちえる)」
• Orange: 「Innocence（無邪気）」, 「Bonds / Kizuna （絆）」, 「Healthy（健やか）」, 「Trust / Faith （信頼 ）」.
• Yellow: 「Decrease of love（愛情の薄らぎ）」, 「Jealousy （嫉妬）」, 「Friendship （友情）」, 「Devotion （ 献身 ）」, 「Tired / Weary of (romantic) love （恋に飽きた）」.434Please respect copyright.ＰＥＮＡＮＡWAUQLh95NL
Source: [x] & [x]
然後按「加至主畫面」