Maybe. But the fact that Fumi compared herself to Sakura is already showing signs of insecurity. When you compare yourself to someone, that's never a good sign.
In this case, Shinobu doesn't seem as supportive which gave me the vibe of her words as "well if it was Sakura..". This is a very dangerous mindset to have. She wants to do this for Shinobu but the question is how far is she willing to go for him? To be seen in the same light as Sakura?
For Shinobu to save Fumi, he has to put any thought of Sakura to bed and assure Fumi that she is the only one he loves. Otherwise she is getting NTR’d.
Cause you’re right. The fact that she is getting insecure. It shows that Shinobu hasn’t reassured her of their relationship. If he has truly learned from Sakura, He has to be assertive, put his foot down, communicate and tell her how it is. Otherwise bro might end up alone.
Two chapters left. Sakura and Shinobu at the crossroads. One will see Romance, the other will see NTR. Let’s hope it’s Shinobu smiling at the end, cause I refuse to see him with an NPC wife.