This title and those who enjoy it, they sicken me deeply.
The protagonist has no personality and just “did nothing wrong”, there is no chemistry with the love interest who just fell uncontrollably in love at first sight for no apparent reason. The evil family is a pure charicature of moustache twirling villains and no character aside from the protagonist feels like the protagonist of his own story, every other character purely exists to support the protagonist's romantic wish fullfillment and has no existence of his own in any way.

Also, the o.p. using an unofficial romanization of the Japanese title rather than the official English one makes for strong evidence that this person is, indeed, a foreveralone permavirgin.

Indeed, it sickens me so. Those who enjoy such dreck do not deserve happiness, and it is most fortuitous indeed that they shall never attain it.