To give context to those who still have doubts,
The developer announced the game as a "Sci-fi Space Harem Visual novel", which piqued the interest of harem players in the game, who asked if there would be any NTR content. The developer gave a vague answer, which made people suspect that the game would have NTR content, so they kept asking for confirmation. The developer responded harshly, which resulted in people being certain that the game would have NTR content. Seeing the negative reaction from all sides, he quickly responded that there would be no NTR content.
The developer himself said in his DISCORD that originally having men in the game was to make things more "realistic" and give the main character some competition, which would make the game have NTR content, and that he thought this competition would be fun. However, in the face of the negative reaction, he changed his mind, which only confirms that harem players' intuition was right, and if it weren't for the insistence on knowing about the content that would be in the game, the surprise would have been negative.