Each to there own opinion of course but I would disagree in certain cases, it makes sense for say Luna & the twins to be locked to Inei, from my understanding they never knew 'Ren', but as for Akira & Nobume as far as they know 'Ren' is dead, why couldn't they fall in love with Inei, I think it's quite clear from what we have seen so far it's not as if either of them seem to hate his personality they just don't seem to understand it, it would take time but it's definitely not impossible.
One thing that will be interesting is who the other 2 locked LI's will be, because we still have 1 missing for both Inei & Ren, the characters list doesn't have any of those we were introduced to in this latest chapter, and no Mei either despite meeting her fairly early on.