^ That was Ichigo in Twins, not Sensei.
In Sensei Ichigo was more of a tragic heroine (actually sidekick), in Twins she turned into the Tasmanian Devil, thanks to Kei and co. helping her to get over her problems.
Granted though Lemon is more like the
awakened Ichigo of Twins, rather than the melancholic Ichigo of the source material that this show adapts