Card-en-Ciel

[エメベアー]

https://store.steampowered.com/app/2730540/CardenCiel/

Native: Story

This is a game that is something of a parody of Crossover isekai.
In a future where VR Games and Real Life are almost blended (somehow), there are errors being spread in games caused by MODs, which are abusing and creating logic that shouldn't exist in the game.

The main protagonist is some sort of "super detective gamer" (don't ask), who saves the girl, and they start going through these "modded games" and interacting with the characters (isekai style).

The game contains both parodies of existing franchises (Kizuna Connect = Digimon, Yggdrasil Records = Mana series, etc), and existing franchises owned by Inti Creates (Gunvolt, Gal*Gun, Gal Guardians).

One of the parody franchises is Love Above the Rooftops, a Visual Novel with a character named "Heit Gapo" (A pun of Height Gap), and he loves big girls. The heroines are all Spaceship Mecha Girls that are at least 16m tall. (This is available in the Demo)

Here is the official page with the characters of "Love Above the Rooftops": https://card-en-ciel.com/en/characters/characters07.html

Although there are specific animations of the characters in some events, there is no direct interaction besides these visual novel-like events.