Miyuki Shirogane: Achievement and the Fear of Exposure
Miyuki’s achievements are real. The difficulty is treating an ideal performance as the condition under which he deserves affection.
Spoilers throughout. This page assumes you have finished the series.
Miyuki Shirogane's fear of being exposed in Kaguya-sama: Love Is War does not mean his achievements are fake. The sharper problem is the belief that affection depends on maintaining an ideal version of himself, leaving genuine effort unable to provide lasting reassurance.
The work behind the reputation
The official anime character profile describes a student council president whose ability rests on intensive studying alongside a part-time job. It also identifies Chika as someone drawn into drills to address his weaknesses. These details make competence something produced through work and assistance. The result can be real even when it requires a less impressive preparation process.
That distinction matters when interpreting his embarrassment. Having to practice does not expose a successful performance as fraudulent. Needing another person's instruction does not mean he has stolen the credit for every skill. A reading that simply calls Miyuki a fraud would reproduce the punishing standard the character has difficulty escaping.
When improvement becomes a condition
VIZ's volume 15 synopsis identifies the romantic difficulty explicitly: Miyuki believes that only his ideal self deserves love. The volume places this problem after the confession stage. Receiving an expression of feeling has therefore not, by itself, resolved how he thinks he must behave to remain lovable.
My reading is that this belief changes what achievement can accomplish. Under it, a success may secure the appearance he wants without settling whether someone would accept a failure. More effort can improve the performance while leaving that second question untouched. The problem is in the condition he attaches to affection, rather than the fact that he works hard.
Effort does not have to disappear
The obvious objection is that wanting to impress a person one likes is neither dishonest nor unusual. Improving at something can be generous, pleasurable and worthwhile. Miyuki's ambition would become less interesting if the only acceptable resolution were abandoning it.
The useful distinction is between offering someone a practiced skill and believing that any visible weakness disqualifies the person offering it. His preparation and Chika's help establish a character who can improve through contact with others. The romantic ideal asks for an appearance that seems to need nobody. Those are incompatible accounts of how his competence is made.
His study, work and presidency do not need to be dismissed for that contradiction to matter. They are accomplishments. The harder question is what those accomplishments permit Kaguya to know about the person responsible for them, including the parts that still require instruction.