Recommend a Drama

I'm open to any Chinese, Japanese, Taiwanese, or Korean series that I haven't seen.  So if anyone can recommend any they have in their top 10 that I haven't seen please let me know, regardless of episode length.

Ah, also prefer it to not be a tragic ending.  I have seen way to many tragic endings lately.

a couple of my faves you haven't seen that have happy endings:
Mr. Nietzsche in the Convenience Store
Heart to Heart
Kids (http://mydramalist.com/1236-kids)

highly, highly recommend watching misaeng (incomplete life). it begins with a heavy, bleak feel but it has one of the best (& happy) endings that I have seen.

others:
age of youth
juhan shuttai
family's form (kind of sad near the end. I cried a little, but there's still a conclusion that should make you smile.)
boku no yabai tsuma (addicting & suspenseful. you'll feel like you can't trust maria but no tragic ending.)

Two Weeks
Ryusei no Kizuna
Buzzer Beat
Siren
Hanazakari no Kimitachi e
Nobuta Wo Produce
Shinzanmono
Asuko March!

For japanese ones I recommend the following:
Pride
Buzzer Beat
Maou
Tumbling
1 litre of tears: I know you said you don't want anything sad, but this drama really is amazing and I highly recommend it it's in my top 10!

For korean ones you have mostly watched all my favorites, so there was only this one left:
Something about 1%

Yamada Taro Monogatari is one I'd highly recommend!!!
Another good one is Umi no Ue no Shinryoujo.