Sennyu Suit

Appearance
The Sennyu Suit is a black office suit with a pink lapel pin. Underneath is a white collared long-sleeve shirt. The tie and pocket square change color to match the wearer's ink.

Trivia

 * The Team Blue of the Splatoon manga all wear the Sennyu Suit during the events of the.
 * In said manga, it is explained that pin on the Sennyu Suit turns the wearer's headgear black which is demonstrated on the Sennyu headgear set being black versions of the Blue Team's normal headgear. It is also explained that the pin also acts as a transceiver.
 * The codes for this gear expired on July 21, 2020, and therefore is no longer attainable.

Etymology
Sennyu is the transcription of 潜入, a Japanese word meaning "infiltration", referencing the spy theme of the suit.