Cleaning liquid and inkjet recording apparatus liquid set

An inkjet recording apparatus liquid set comprising:

• a first liquid;
• and
• a second liquid, wherein
• the first liquid is an ink and the second liquid is a cleaning liquid,
• the cleaning liquid contains water, a specific organic solvent, and an acetylene surfactant,
• the specific organic solvent is at least one selected from the group consisting of polyhydric alcohol and polyalkylene glycol,
• the specific organic solvent has a percentage content of at least 1% by mass and no greater than 18% by mass to mass of the cleaning liquid,
• the acetylene surfactant has a percentage content of at least 0.3% by mass and no greater than 1.0% by mass to the mass of the cleaning liquid, and
• a contact angle θi of the ink with respect to an austenitic stainless steel plate and a contact angle θc of the cleaning liquid with respect to the austenitic stainless steel plate satisfy a numerical formula (A):
• θi−θc≥10 (A).