ikaruga w his first baby: 'you dont need to coddle me, i can handle it'/ 'stop fluttering around me, i need space'/'as leader of the jingasa, im more sturdy and prepared than anyone for these challenges. begone"/'i understand your looking out for me, but this is overbearing.'
ikaruga second child: 'your kindness knows no bounds, subaru'/'my love, could you please retreive this order from iroha for me? yes its 3 dozen mochi mixes-of course you can have one!'/'ah, a bath dear. If you could--ah yes, please hold my hand as well…'/'take a walk? in this state of mine? perhaps you could do it for me-ill give you a shikigami to tag along with you.'
basically: his first child and this new physical state that he's in brings back memories of being a burden and needing to earn his keep and show his independence, which leads to him secluding himself more and taking unnecessary risks and trying to maintain his usual schedule. this would lead to subaru and others to worry and fret over him more and then eventually there is a slight rift from what he wants to do and whats best. he would need a serious wake up call to change his mind, something like the threat of losing his and subaru's child. feel me?"