Caffeine Zero Namacha (カフェインゼロ生茶)

About
Namacha is a brand of bottled green tea sold by Japanese beverage company, Kirin. Namacha was first sold on March, 2000 while the caffeine-less version was sold on April, 2014.
Shown here is the "Caffeine-Zero Namacha". On the label, it is printed that they now use 1.6 times more tea leaves than before and brew the tea at 70°C. It is also claimed on the label that Namacha is the world's first bottled green tea to have less than 0.001g/100ml of caffeine.

Taste
Compared to other bottled green tea brands, Namacha seems to have a smooth, velvety taste and also has a subtlely sweet aftertaste. It's a good drink, but don't expect bottled green tea to taste like freshly brewed green tea; the taste is a little different. The same can be said for other bottled green tea brands as well.
Compared with the normal Namacha, there seems to be no difference in taste.

KIRIN World Kitchen - Harecha

About
Kirin Harecha is an unsweetened tea drink sold by KIRIN under their "World Kitchen" brand. Inside Harecha are four herbs, lemongrass, mint, rosemary, and geranium, mixed with green tea.
On the label is a passage about how housewives in Greece include lots of herbs inside their cooking. This is supposedly where the inspiration of this drink came from.

Taste
The taste is slightly bitter and you can definitely taste the herbs that are inside the drink. I could clearly taste the mint and rosemary, while the lemongrass was quite subtle. I could not distinguish the taste of geranium since I do not know what it tastes like.
Although very unique as it is unsweet, the taste wasn't unexpected at all.　It tastes like what you would expect an herbal green tea to taste like.