The Shard of Tesla that caused the train incident is said to contain the notes for the Tesla Coil, and could trigger similar high-damage incidents in the vicinity. Botan and Kuruma act to recover the shard and prevent that, but are watched by another duo.
"A Consideration on 'Mission IS'"
Huh? Five more seconds?! Oh no, I
shouldn't have underestimated Botan!
" 'النظر في 'العملية إيس"
ماذا؟خمس ثواني بعد؟
!يا إلهي، ما كان علي الاستخفاف ببوتان
Mist, ich will es Botan nicht gleichtun.
Zum Glück war’s das scho…