This is called shiso, or also known as oba, and yes.

这叫紫苏，也叫作 oba，是的。

He's also known as Oba Esigie, since " oba" means " king" in Edo.

他也被称为 Oba Esigie， 因为“oba” 在江户语中意为“国王” 。