Vice-president of the first generation adventure club. He serve as the main antagonist of the story.<br /> <br /> Ikusaba almost caused the disbanding of the first generation of Adventure club by using a female member as sacrifice to get a Nanana Collection, causing her physically crippling, and left the club with the collection.<br /> <br /> Ikusaba is also the previous resident of Nanana's room, but was kicked out as he rarely stays and often left Nanana alone.<br /> <br /> (Source: nanana.wikia)<br /><br />