i won't recommend tao's buffet if you r expecting real japanese flavour.. the food there are much taiwanese style and the price r not worth if you can really eat that much... if you really wanna eat nicer japanese food.. try kirishima 

-Kirishima
Cititel Penang, Jalan Penang • Tel: 604-370 1188

for german food.. u can try Ingolf's Kneipe..every wednesday they got special price set dinner. it's very nice and the portion is big. enuff for two ppl.. 

-Ingolf's Kneipe
Jalan Sungai Kelian, Tanjong Bungah, Penang • Tel: 604-899 5796
Cuisine: German