Sen said
I was tempted to describe his muscles clenching, but I decided that might end up seeming fanservicey
I'm glad you didn't. There's a time and place for describing Rokoru's bulging muscles in excruciating detail, and that post wasn't one of them. You kinda needed to have the tension and the 'oh shit' feeling at the end.
I miiiight sneak a bit of fanservice in my post to compensate, but it'll be mainly innocent fangirling for the most part.