yeah but actually i think everything that has not a rank of a very high ranked youkai has too be afreid of flandre not the other way around i would still take her and hug her even if its the last thing i do in my life
To be fair, Flandre WOULD be afraid of what she can't control.
And, afterall, the loud rumbling of thunder is sound waves... and I doubt Flandre understands the similarities of waves and particles at the subatomic level.