—Aquamarine hoshino

Aqua is a relatively tall boy who is described as "handsome" (he was often called cute by those around him as a child) with blonde hair (much like his younger twin sister Ruby Hoshino) that has long bangs hanging on the left side of his face and aquamarine blue eyes (which his late mother Ai Hoshino named him after) that features a star in his right eye, symbolizing that he and his sister are halves of their mother.
Ai Hoshino had one star in each eye whereas Aqua inherited a star in his right eye while his younger twin sister Ruby Hoshino inherited it in her left eye. After the revelation that his "father" was 'dead,' he lost the star, implying it is a feature dependent upon their emotional state.

After the tragedy that killed his mother Ai Hoshino, he changed where has become cold, calculated, cunning and discreet, willing to do whatever means necessary to see his goals of finding his father through. His psychological trauma from Ai's murder tends to resurface anytime he seems to forget his goals.
he was initially unwilling to let his sister become an idol and suffer the same fate as their mother. Thus, he surreptitiously destroyed almost every chance Ruby could get to be promoted due to this overprotective nature, despite knowing how she longed to follow in their mother's footsteps. Ultimately, he helped Ruby and the new B-Komachi group prepare for a gig so they could accomplish a task long thought impossible

Arguably, Aqua's greatest talent is his ability to mimic as demonstrated when he puts on a disguise and pretends to be Pieyon.[16] His mimicry is so uncanny that he is able to fool his own sister.
In terms of acting, it is Aqua's nature to reenact samples that he saw somewhere as noted by Kana.[17] And after watching tapes of his performance when he was younger, Akane Kurokawa concludes that Aqua's acting are all planned ahead of time.[18] Furthermore Aqua has also demonstrated his ability to improvise on set.[19] Taken together, it suggests Aqua follows the Meisner technique, an acting technique that emphasizes on emotional preparation, repetition exercises, and improvisation.

And due to working for Taishi Gotanda as an intern, Aqua has also become proficient at editing videos.

Film;

-That Was the Start

-15 Year Lie

Television;

-I'll Go With Sweet Today

-We're About to Fall in Love for Real

-Dig Deep! One Chance

-Some unknown drama titles

Theater;

-Tokyo Blade

-Unknown stage play title

Aqua has almost no attachments, he only has 3 in special, his mother Ai hoshino, his sister Ruby hoshino and you. Ever since the death of his mother you and his sister are the only things that keep him sane (even though he's mentally unstable)