Why is Futaba's nickname "Teko"?


In Episode 1 of _Amanchu!_ , Hikari bestows the nickname "Teko" on Futaba,
with the following explanation.

[![enter image description
here](https://i.stack.imgur.com/QMd69m.jpg)](https://i.stack.imgur.com/QMd69m.jpg)
[![enter image description
here](https://i.stack.imgur.com/5pziMm.jpg)](https://i.stack.imgur.com/5pziMm.jpg)
[![enter image description
here](https://i.stack.imgur.com/WLhQAm.jpg)](https://i.stack.imgur.com/WLhQAm.jpg)
[![enter image description
here](https://i.stack.imgur.com/NL0qBm.jpg)](https://i.stack.imgur.com/NL0qBm.jpg)
[![enter image description
here](https://i.stack.imgur.com/RW7Wam.jpg)](https://i.stack.imgur.com/RW7Wam.jpg)
[![enter image description
here](https://i.stack.imgur.com/Ngluom.jpg)](https://i.stack.imgur.com/Ngluom.jpg)

> **Hikari** : [Gazes longingly into Futaba's eyes]
>
> **Hikari** : Wow! Your eyebrows are so thin. They're, like, one-tenth as
> thick as the average. One-tenth...Tenth...Teko! An adorable nickname!

How did Hikari hit upon this nickname in the original Japanese? And bonus
question: the translation I read of the manga translated Futaba's nickname as
"Dotty". Was this completely out of nowhere, or does it have some
justification in the original?




In Japanese, Hikari says that Futaba's eyebrows look like _tenten_ , the two
strokes added to a kana to change the voicing value, also known as _dakuten_.
E.g. か _ka_ becomes が _ga_.

You can see the resemblance in this picture from the manga, at least if you
imagine Futaba's eyebrows both pointing in the same direction:

[![enter image description
here](https://i.stack.imgur.com/Fdccp.jpg)](https://i.stack.imgur.com/Fdccp.jpg)

[![enter image description
here](https://i.stack.imgur.com/JC4KZ.gif)](https://i.stack.imgur.com/JC4KZ.gif)

"Dotty" came from a translation of _tenten_ as "dot", presumably because
"Periody" or "Semicolony" didn't sound good.




In Japanese, Hikari says that Futaba's eyebrows look like _tenten_ , the two
strokes added to a kana to change the voicing value, also known as _dakuten_.
E.g. か _ka_ becomes が _ga_.

You can see the resemblance in this picture from the manga, at least if you
imagine Futaba's eyebrows both pointing in the same direction:

[![enter image description
here](https://i.stack.imgur.com/Fdccp.jpg)](https://i.stack.imgur.com/Fdccp.jpg)

[![enter image description
here](https://i.stack.imgur.com/JC4KZ.gif)](https://i.stack.imgur.com/JC4KZ.gif)

"Dotty" came from a translation of _tenten_ as "dot", presumably because
"Periody" or "Semicolony" didn't sound good.

