So, thou art the rumored "U-Boat"?

I am the hawk-eyed modern heavy-cruiser, the first Tone-class ship,

Tone!

The second ship, Chikuma.

Pleased to meet you.

Together they are ToneChiku.

Don't chain us together, you boor!

It's an ingredient for Chinese soba.

Not shinachiku. bamboo shoots boiled, sliced, fermented, dried or preserved in salt, then soaked in hot water and sea salt

It's when you're running around at overtime service.

Not headless chicken! Originally it was 社畜 [shachiku] - corporate slave

Erudition unchiku