But it was that very minuscule arrow that, upon entering the electrical sac, directly caused it to explode. Just one arrow was enough to kill a Plasma Bug.
Dong Tianyu relied on Divine Sense to spot this arrow. While the Simon brothers noticed it later than Dong Tianyu, they did not have Divine Sense to aid them, deducing the conclusion merely with their naked eyes, which also proved that the Simon brothers were anything but ordinary.
When the last Plasma Bug was sent off by the archer's arrow, a great weight that had been pressing on everyone's hearts instantly disappeared, and everyone relaxed quite a bit.
With no more than a dozen Plasma Bugs left, as well as the tide-like number of Soldier Bugs, everyone was filled with confidence that they would make it back to Kyoto alive.
