Tekken

Tekken is a fighting video game series by Namco that has had manga, anime, CGI and real life adaptations of its stories and characters.

Tekken 2
Anna Williams is taking a Shower in her ending cut scene. She turns the water off, grabs a Towel and gets out of the shower. Her sister Nina Williams walks in and begins taking Polaroids of her. Nina holds up the picture of Anna covering her breasts with her arms and laughs.

Tekken: the Motion Picture
Anna Williams takes a Shower.

Tekken 3
Nina Williams is seen awakening from a Tube Bath in the games opening.

Tekken 4
During Ling Xiaoyu's opening story, one of the still images was of her in a Public Bath after training.

Tekken Maxim Photoshoot
For a Maxim photoshoot done in 2007 for the Maxim magazine, some females dressed up as Christie Monteiro, Lili, and Ling Xiaoyu in a video, titled "Girls of Tekken Photoshoot". The names of these females dressing up as them are "Hannah" (as Christie Monteiro), "Natalie" (as Lili), and "Krystle" (as Ling Xiaoyu).

The photos are taken during the video. The video features gameplay and FMVs from Tekken 5: Dark Resurrection, as well. At most points, the girls are barely wearing anything and are underneath a shower. There are also some moments where they are completely naked.

For snapshots see here

Tekken: Blood Vengeance
Shin Kamiya taking a shower in the film. He is observed by and talks to a man in black boots when he is done.

Tekken Tag Tournament 2
In Ganryu's ending cutscene, Julia Chang is seen Stripping and then taking a Shower but only seen behind a curtain except by her legs. Ganryu is spying on her but is taken into custody by Lei Wulong for voyeurism.