Ueno Haruki

When Hiro's kindhearted brother, Tadashi, vanishes through a portal to save him, the boy genius is devastated. But his big brother left something to help Hiro cope with his loss--a personal health-care robot named Baymax. And when what Hiro needs more than comfort is an explanation of his brother's disappearance, Baymax--with a few upgrades--may be just what the doctor ordered! With new friends and Baymax 2.0 by his side, Hiro is determined to get to the bottom of everything...and he might end up saving the world on his way! \[Yen Press]

Story from HIRO´s view about start of group EXILE.

Daimon Kaito is a high school boy, who loves puzzles. One day, the president of the student council gives him a mobile device and it leads him to an underground ruin buried in the school. He challenges an "insolvable puzzle" hidden in the ruin with his girlfriend Nonoha, but the puzzle turns out to be the dangerous "The Puzzle of Sage" created by the black society "POG". He manages to solve the puzzle but it's the beginning of a puzzle battle against POG.