I need to watch more as well, but two Japanese drama films I enjoyed were Tokyo Sonata and 37 Seconds.
The latter was suggested to me by a former friend and I found it pretty relatable as I am disabled like the protagonist. Both made me cry during certain scenes.
There are others mentioned in this thread that I know of... mostly titles I haven't seen, but that interest me.
I've been meaning to watch Maborosi and After Life for years. They're by Hirokazu Kore-eda.
Someone posted about Shoplifters and that looks good too.
There's also a random film called Moonless Dawn. It has an ethereal feel like Lily Chou-Chou.
I never finished Lily Chou-Chou because it was confusing and it was hard for me to connect with the characters or situations. I tried watching it several times and it isn't for me, sadly.
Moonless Dawn is okay. I saw it about 4 times. It doesn't have much of a plot but I don't regret my time with it. I've seen worse. I believe it was made to promote an indie band called LOWPOPLTD.
I also saw a mention of Suicide Club on here, I watched that ages ago... it is rather provocative and I think there were unnecessary scenes.
There's a 'sequel' called Noriko's Dinner Table which I found super boring! Lol. Don't think I ever saw it in full. It's overly long and I didn't really care about anything that was happening.
I saw two of Shuji Terayama's works, they were Pastoral Hide and Seek and Grass Labyrinth. They're super experimental and don't make much sense. I normally enjoy these kinds of things, but these were average at best in my opinion. I always seem to bring up Shuji Terayama at some point, because his style does impact me in some way... and yet I am unable to enjoy his movies.
Speaking of weird shit, I absolutely love Tetsuo I, II and Pinocchio 964.
If you're into any of these, there's also Guinea Pig: Android of Notredame which features Tomorowo Taguchi (he was in Tetsuo). These are cyberpunk body horror ficks.
I tried watching Bullet Ballet once while high and I got so sick that I had to stop. Never came back to it.
Another one is Burst City, but that's more of a showcase of the Japanese punk scene. I thought it was alright.
I also have to check out Death Powder and Godspeed You! Black Emperor, among others.
I know more films that could be interesting, so maybe I'll return to this thread later.