Metropolis: Please Don't Confess Your Feelings.

Jiang Han travels to a parallel world and obtains a system. As long as he licks the target, he can get system rewards until the target accepts the confession or confesses to Jiang Han. From then on, Jiang Han embarked on a difficult journey of constantly licking girls, then being confessed by girls, and finally being licked by girls. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.