指切り -𝙔𝙪𝙗𝙞𝙠𝙞𝙧𝙞- (jjk crossover)

Yubikiri or pinky promise. The one who broke the promise must swallow thousands needles and cut their pinky finger off.
𝘐𝘵'𝘴 𝘢 𝘱𝘳𝘰𝘮𝘪𝘴𝘦 𝘰𝘬𝘢𝘺?

This is a one shot crossover story

Character base by Gege Akutami and Scop (producer who wrote Yubikiri)