Gundam Build Fighters (2013)

S1E4 Gunpla Idol Kirara

Sei finds himself drawn to a quiet, enigmatic girl who shares his passion for Gunpla. As they bond over building and customizing kits, he begins to fall for her—never suspecting that her interest in Gunpla Battle runs far deeper than a simple hobby. Unbeknownst to Sei, she harbors a hidden agenda tied to the very battles he loves.