Turbine and turbocharger

A turbine, comprising:

• a shaft;
• a turbine wheel mounted on one side of the shaft;
• an accommodating portion configured to accommodate the turbine wheel;
• a first turbine scroll flow passage that extends around the turbine wheel on a radially outer side, and communicates with the accommodating portion;
• a second turbine scroll flow passage that extends around the turbine wheel on the radially outer side, communicates with the accommodating portion, and is arranged on the one side with respect to the first turbine scroll flow passage;
• a first tongue portion that is provided at a position facing a downstream end of the first turbine scroll flow passage, and is inclined to one side of the turbine wheel in a circumferential direction as extending toward the one side;
• and
• a second tongue portion that is provided at a position facing a downstream end of the second turbine scroll flow passage, and is inclined to another side of the turbine wheel in the circumferential direction as extending toward the one side,
• wherein the first tongue portion and the second tongue portion extend in a straight line when viewed in a radial direction of the turbine wheel.