Board Thread:General Discussion/@comment-26529154-20160209144808/@comment-28053472-20161013162244

The fun girl is probably a rival, BUT not a normal one. She's had a crush on Senpai for ages, but was too shy to confess, and once she heard Megami describe him, so she decided not to confess.

But, If you manage to kill Megami AND befriend Oka and the science club, they'll help to bring back Fun Girl(Albeit Accidentally). Now, knowing that Megami is dead, she tries to fight you to get back Senpai.

But if you don't complete the needed steps, she'll appear in a cutsene pleading for help.