I kind of understand why Space Brothers has a huge overlap with fandoms of various battle series. One, it’s an objectively good show with very understandable messages. Two, it’s been on crunchyroll for a year, so it’s had plenty of time to catch the eye of the people who come there for Naruto (i.e. the majority of users). Three, similar to a good battle series like Hunter x Hunter, it can set an arc based on a very rigid set of rules and ideas, but grow very complicated very quickly, while being a thrillfest the whole way. The sealed-capsule arc was a great example of that approach in action, as was the more recent lunar-crash arc. The comeback competition is really just the latest example, this time featuring Engineering, but knowing that it’s somewhat formulaic doesn’t make it any less exciting to watch.
Bonus points for viewers who happen to have built a robot before