Volume 8, Act 26

Sinister people are at work, and they've gotten their hands on Tatsuki. Yuuto, naturally defaulting to taking care of Kotarou, starts to realize that Kotarou is more useful than he lets on...although that usefulness is accompanied by psychological stress. Hang in there, Kotarou!

This chapter features one of the best Tatsuki/Yuuto scenes in the entire series, although the rest of Volume 8 has a few solid runners-up. I'm sure the four TatsukixYuuto fans out there will go wild with this volume.