Tatsuha Uesugi

Tatsuha Uesugi (上杉樹把 Uesugi Tatsuha) is one of the main characters from popular anime and manga series, Gravitation.

Basic information
Tatsuha is Eiri's brother, who has the same voice (though not the same seiyū) and characteristics as his older brother, but with black hair and eyes. Tatsuha is obsessed with Ryūichi and watches his Nittle Grasper video repetitively. He's quite the perverted and obsessive fan, not to mention a 16-year-old monk. He`s bisexual.

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Eiri's younger brother, tied to being a priest at his parent's temple. While his father was on sabot, he and Eiri were allowed to come play there. If it benefits Ryuichi Sakuma, he would sell his soul to the devil.

Relationships
Tatsuha is completely and utterly obsessed with Ryuichi. He falls into the same category as Shuichi as seeing him as a god. Unlike Shuichi he's also attracted to him and goes to extreme means to get his hands on the singer. Whether it's faking illnesses or dressing up in an animal suit, Tatsuha will do anything to get Ryuichi. Ryuichi sort of sees him as a playmate and is oblivious (or maybe not) of Tatsuha's intentions.

Unfortunately for Shuichi, if Tatsuha can't get his hands on Ryuichi he forces his UST upon Shuichi as Shuichi resembles Ryuichi (An example of this was shown in the anime, when Tatshua sexually molested and thrust himself upon Shuichi before Yuki appeared). When Yuki appeared, he commented that Tatshua hadn't changed at all in those terms. All the same, if Shuichi can't get to Eiri he forces his UST on Tatsuha, as Tatsuha looks a lot like his older brother. Either way both are friends, though Tatsuha doesn't hesitate to turn on Shuichi in regards to Ryuichi.