Quick Transmigration: Hosts, We're Only Responsible for Counterattacking

[Warning: This is not a good read.] Shen Yun has been bound to a counterattack system and is told he has to do some missions.
System: Host, what are you doing?
Shen Yun beamed: "Doing a quest, huh?"
System: No, we're only responsible for turning the tables, not breaking up couples.
Shen Yun: No need to thank me, the capable should do more.
System: Who thanked you?
P.S.: My host always wants the male and female protagonists to grow old alone.

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