/jp/ - Otaku Culture

Can someone help me with this? I already captured it with Youmu in ~30 or so attempts and it wasn't that bad, but with Reimu I'm somehow not doing enough damage with the same strategy. What I'm doing now is treating the energy balls like a dense stream while trying to avoid the lasers, going bottom-of-the-screen left-side-further-up bottom-of-the-screen right-side-further-up and tehn repeating. However going by my attempts so far even if I manage to kill her before the time limit there'll be less than 10 seconds remaining.
Is there a strategy that allows you to stay near the middle for longer periods of time?