TV-Series
Description
A-37 is a male unlockable character in Mahjong Soul, obtained via the Bamboo Path during the 2021 The Cafe's Routine Event.

He is a weapon master stranded in One Han City after losing his luggage, leaving him without legal status. This compels him to seek refuge at the player's residence. In exchange for shelter, he provides protection services, part of an undisclosed and ambiguous secret mission, framing him as a mysterious figure bound by duty.

His personality blends professional detachment with unexpected warmth. He declares, "As promised, I will protect you from behind the scenes. So you won't see me, and you don't need to call me. I'll only show up when necessary." Yet, during the Firework Date scenario, he reveals, "Fireworks? I don't know... I shouldn't look away from my employer. If I have to say it... you can take that as you being more beautiful than the fireworks." A wry, resistant side emerges in the Summertime Coffeeshop context: "Instead of visiting me, you are actually here to pet the cats, right? Don't worry, being enamored by fluffy animals is not a sin... Don't look at me like I'm a cat, face the reality, I'm not a cat and bribing me with cat food is futile... Coffee won't work either."

Achieving full bond requires 50,000 bond points plus specific items: 10 Spheres of Will, 10 Spheres of Courage, 5 Classic Paintings, 10 Wishing Stones, and 100 Star Dust. Spheres are acquired from the Misc. Shop (50,000 Coppers), the Wishing Shop (10 Wishing Stones), or Match Chests in Silver Room tiers and above.

His visual design features dark skin, piercings, and tattoos. Outfits include his default appearance, a Full Bond variant, an animated Firework Date ensemble, and Summertime Coffeeshop attire.