As some might have realised they REALLY are meant to get in the way of sensei.
They only started moving because Sensei claimed him first otherwise they would never do anything about MC.
a chapter where the author introducing other heroine, none of em look appealing to me ( student council girl look prety hot tho) and none of em could win against sensei
*Tries to process this* Ah, he must be the future ruler of all magic/demonkind whose balls produce jewels is the secret heir to a vast fortune and is the reincarnation of different reincarnators that have been feudal warlords both Japanese and Chinese and even unknowingly saved various spirits and deities in his childhood. Also his manhood is the manifestation of various ancient holy relics and weapons.
The only way this could turn up even slightly make sense is if the 'harem' were all friends with each other and actually set this whole thing up to trick the mc as some big elaborate prank where they all betray him at the end. But seeing as this is a Japanese rom com harem school manga my theory is obviously not correct, but if I am correct i'd feel tremendously sorry for the mc and this manga would actually turn into something I want to read.
Aaaaand here we go - only 3 chapter and we've get 4 girls and 4 confessions out of nowhere - and some interesting manga became ball of harem crap. Fuck this