Need a keybind, a toggle (due to them needing to be re-equipped after one use to get the other strap, just have them active or not) or something for the scissors. Last level was way harder to do than I think it needed to be by the love bar decreasing extremely fast as soon as the shirt came back. Had to "prep" the scissors before the shirt rematerialized just to have enough time (apparently she doesn't care if you poke her boob or use the scissors on it, its all excitement for her).
Beyond some random bouncing, the growth, and the titillation of naked breasts, there probably needs something more for engagement. Maybe more interactivity, like being able to play with them some (ie. being able to go from the more controlled earning mode to a more wild teasing mode, pushing/pulling different directions, her reacting with more facial expressions and sounds), talking to her (maybe a short storyline of why we are here and why we are doing this, as it doesn't need to be complicated or make too much sense), or even special "reward" upgrades that may or may not help with our goal, but definitely something we want (like customization).
Regardless, had my fun with it and the art is good despite its simplicity. You have my thumbs up.