So, 1.6em now.
は
wa
で
de
す
su
か
ka
の
no
こ
ko
そ
so
ど
do
あ
a
ね
ne
とて 
---------------
 |a |i |u |e |o
 |あ|い|う|え|お
k|か|き|く|け|こ
s|さ|し|す|せ|そ
t|た|ち|つ|て|と
n|な|に|ぬ|ね|の
h|は|ひ|ふ|へ|ほ
m|ま|み|む|め|も
y|や|  |ゆ|  |よ
r|ら|り|る|れ|ろ
w|わ|  |  |  |を
----------------


TABS did this,
but is too wide.

https://www|i2symbol|com/
  cool-letters/hiragana

が ぎ ぐ げ

ご ざ じ ず

ぜ ぞ だ ぢ

づ で ど ば

び ぶ べ ぼ

ゔ

https://www.johndcook
.com/kana.html
https://stackoverflow|com..
/questions/19899554/
unicode-range-for-japanese

Unicode name:
IDEOGRAPHIC SPACE
Code point: U+3000


U+0020
SPACE
Half-width (Latin)
The normal ASCII space
— half the width of
a full-width char.

1.6 em now.