リコ（与田祐希）は、幼馴染から突然の告白を受ける。二人は幼少時代に、とある約束を交わしていたようだったが、全く覚えていないリコは当然の如く告白を断る。それでも粘り強く諦めない幼馴染を見て、リコは一緒に人助けに行くことを提案する。数々のミッションをこなす中、二人の目の前に突如現れたのは凶暴なイノシシ…！？戦闘の末に負傷した幼馴染の手当てをするために、リコは矢島模型店へと向かい…
Riko (Yoda Yuki) receives a sudden confession from her childhood friend. It seems that the two had made a certain promise when they were young, but Riko, who has no recollection of it, naturally rejects the confession. However, seeing her childhood friend's tenacity and refusal to give up, Riko suggests that they go together to help people. While completing various missions, a ferocious wild boar suddenly appears in front of the two...!? Riko heads to Yajima Model Shop to treat her childhood friend who was injured after a battle...
