简介：Hero was a high schooler living an ordinary life.<br /> <br /> One day, he meets a very strong and intelligent mechanical arm named &quot;Mecha-ude&quot;. After a strange turn of events, the &quot;Mecha-ude&quot; started living inside Hero's hoodie and the two's life full of trouble begins.<br /> <br /> As the boy and his &quot;Mecha-ude&quot; fights together and strengthen their bonds, the two also meets new friends who also fights along with each of their own unique &quot;Mecha-ude&quot; partners.<br /> <br /> Out of those, one of the heroine has two &quot;Mecha-ude&quot; which appears out of her skirt. An active girl with a totally opposite characteristics from hero himself, he gradually becomes attracted to her.<br /> <br /> But the two are confronted with other &quot;Mecha-ude&quot; users who are in search of the secret of &quot;Mecha-ude&quot; relentlessly.