Just Bonding with the Angel Sisters

It’s a story that takes place over about two months, beginning when the protagonist, who has moved to a quiet countryside, meets a girl at a bus stop on his way to work. At first, she’s very cautious, but through small interactions each time they pass by, their relationship gradually deepens.

Mecha Shooting × Harem Building
 
Mecha Harem: Bonds of the Abyss blends thrilling bullet-hell mecha shooting with lewd H-interaction gameplay.
Pilot your fighter to dodge dense bullet patterns, defeat powerful bosses, and gather fuel for your mothership—the last hope of humanity in space.
Bond with the beautiful heroines aboard your ship… and even the sexy female bosses you conquer.
 
An unlucky loser gets struck by lightning and finds himself isekai’d into a post-apocalyptic universe.
With help from girls of various professions, he boards the mothership and accepts missions to search for resources.
Piloting his mecha, he fights through galaxies, defeating enemies and adding each beauty to his harem.
Beat a stage boss, return to your ship, and enjoy exclusive H scenes with undressing, speed control, and position switching for maximum immersion.

The protagonist accidentally stumbled into a mysterious billiards club and encountered a variety of billiard angels inside.
Strive to defeat them with your billiard skills! Victory will earn you rewards from the billiard angels!
Can't wait any longer? Go challenge these billiard angels right now!

Your first adventure begins in four days. And today, you’ve reached “The Angel Inn”, where you can relax before the departure. Is this your lucky day? The only male guest, with 3 beautiful girls.
Get to know them, and be wise in managing your time, because good things may happen at The Angel Inn!

By 2050, human civilization has entered the "Early Interstellar Exploration Era," achieving significant technological breakthroughs: artificial intelligence has permeated daily life, the global population has stabilized at around 9 billion, and the urbanization rate has reached 85%. Humanity has begun launching probes to near-Earth planets in an attempt to search for traces of extraterrestrial life.
At this time, humanity has not yet formed a unified global defense system, creating a vulnerability for future alien invasions. Women occupy a vital position in society, participating extensively in technological research, government administration, and basic production, even dominating in some areas (such as biotechnology and interstellar exploration). This is a key reason why alien species target and steal energy points.
The protagonist is an awakened individual with fire abilities. He shoulders the important task of eliminating alien creatures and saving Earth's women. His intelligence, courage, and selfless sacrifice earn him favor and a large female fanbase. Some of these women awaken weak supernatural abilities (such as perception and healing) and actively join his resistance, becoming his support and foreshadowing later love-hate relationships.