imagine if nirei finds out about suo and sakura's shitty living situations and immediately sets out trying to find ways to get them independent asap. like he's just obsessing over every law and detail that can get suo and sakura out of their parents' control even a fraction sooner so long as it doesn't leave them on their own without support. maybe he even gives up a portion of his salaries to them because it's not like he needs it to survive: he's still under his parents' care, after all.
perhaps he even tries to document stuff to prove that suo and sakura at LEAST are undergoing child exploitation by the talent agency and then releases the evidence and info after they're transferred to the agency that manages bofurin?
maybe he only starts researching child abuse and exploitation laws so obsessively only after he goes "hey, do you guys want to disband?" and suo or sakura's like "no, because we'd be kicked out without living expenses then" and nirei has to pivot strategies.
sakura just casually dropping hints that his living situation is deeply fucked up... and then he gets sick and misses practice one day, and so suo and nirei naturally go to check up on him. they get his address from their manager and are shocked when it leads them to the most rinky dink apartment you can imagine. the only thing in it is a futon. he doesn't even have a pillow.
and nirei's just like. this isn't right.
suo at that moment realizing that perhaps sakura is in a similar boat to him... what can he do to help nirei without revealing anything about his own situation. his situation is fine, of course- no need to worry about him. after all, he's still getting fed daily while sakura's pinching pennies to make ends meet.
nirei doing little things to help sakura's situation. he's the center of the group so he gets some say about what kinds of activities they do. can we do more food reviews? more cooking shows? anything so that sakura can have an extra meal since clearly something deeply fishy is happening with his salary. he tries to snoop as much as he can without getting caught.
and just... learning that their agency's owner is sakura's father? oh it makes it so much worse. so much worse. he'd be happy to blow up both their group and his dream, but he's afraid that sakura might get more negative backlash than he'd want him to. thankfully, that information happens to get leaked entirely on its own...
(sakura when he gets his first paycheck at their new agency and it's an actual livable wage... he doesn't have to pinch pennies anymore! i mean, he still does that anyways because old habits are hard to break, but he like. doesn't HAVE to.
meanwhile suo's family is still stealing his entire paycheck. the only difference this time is that the agency doesn't know about it.)