Honestly scared to start this in case it turns into some twin-chest shit. Someone tell me ...

We don't know bro, we just hope lol

Um it's hard to say. I didn't see any twin-chest cause I was making sure to ignore words that can have double meaning. If you read literally you should be fine. Twin-chest might be implied as a joke by the author with certain phrases, but not really the characters if that makes sense. There's no uncomfortable tension from what I've read so far, which to clarify was 5 chapters. (￣∇￣")