>>281733214
After Renka get her permanent Kishishouten upgrade, no one comments about her being super busty or anything like that. As if she stayed in her loli form even with the power up. In fact, they were able to hide it for a while.
And I think Mare thinks Maro likes her as she is so she hasn't change. She does prefer being cute over sexy. Suzuka does know his preferences and kept her bust the same after her upgrade. So they most certainly know his preferences. Guess Renka wants to tease him more over it.
>>281733050
May be technically bigger while not being all that much larger. Going from K cup to L cup isn't that much of a visual difference than going from A cup to K cup. That's how my head cannon is.