 If you liked
Punch Line
|
 ...then you might like
Bubuki Buranki
|
both of these are anime that start off weak (as in they give low expectations), but have strong endings. they're both gems in the rough in which the corresponding score is most likely due to people dropping from watching the first couple of episodes.
while otherwise these anime are completely disimilar, they're anime that reward the viewer at the end with definitive development. for punchline, it's radical development plotwise; for bubuki buranki it's development via characters both protagonists and antagonists.