Is kaiser gay

Michael Kaiser (ミヒャエル・カイザーMihyaeru Kaizā?) is a prodigy U forward from Germany who plays for Bastard München during the Neo-Egoist League as the team's ace and main striker. Kaiser is regarded as a prodigy and is also a member of the New Generation World XI.

The simple reading is that Ness is just gay and down horrendous for Kaiser, but I am curious to how everyone else interprets it? I have seen theories that Ness and Kaiser are childhood friends with a similar dynamic to Nagi and Reo, just even more unhealthy, and that they rose up from being poor.