Link: https://manbow.nothing.sh/event/event.cgi?action=More_def&num=248&event=137

Uses no object file as base.

Balancing seems fine, not really sure.
Twin Stream Lite is currently not for IR submission; would love to hear about pattern variety / flow, density balance.
Feel free pointing out which parts deemed reworking or even pattern suggestions.

Estimated difficulty: 
Twin Stream - st3~4
Twin Stream Lite - sl9~10