Even before the strategy meeting, there was one thing that was already decided. Or rather, there was no way to avoid it.

They would need Thanatos' cooperation, and Thanatos herself wanted to fight Hypnos. However, as she was right now, she wasn't much stronger than any woman you could find on the streets.

But the solution to that problem was already well known. Kizuna merely needed to use his Eros' Heart Hybrid ability to temporarily increase the little bit of power left in Thanatos, allowing her to reclaim some of her previous power even if just for one fight.

That is one of the reasons why Thanatos suggested to Kizuna that they should try to get closer, but that's beside the point.

Rather than in the Love Room, this Heart Hybrid would be done in the place Kizuna and Thanatos were living. Gertude, their other housemate, would spend the night somewhere else for that night.

Both Kizuna and Thanatos had already taken a bath and were ready to start the Heart Hybrid. They were both in the bedroom and were sitting on top of the bed.

"… You know, if you had said you wanted to do it, I wouldn't have minded it."

"A-ah. But I don't think it's something we should do lightly. Just a normal Heart Hybrid should be fine."

What they were talking about was something Nayuta had told Kizuna at the same time she had been talking with him about Reiri, and then later explained to everyone in the strategy meeting.

Eros' abilities weren't limited to just Heart Hybrid. They already knew about stuff like Climax Hybrid, Connective Hybrid, Kisscharge Hybrid and such, but Nayuta discovered one more type of hybrid.

She called it Ecstasy Hybrid. Just like how Climax Hybrid was an evolution of Heart Hybrid, this was an even further evolution. Nayuta said that, doing Ecstasy Hybrid, it should be possible to get Thanatos back to 100% or very close to it for a limited time, but there was a catch.

Unlike the other hybrids, which could be successfully done with just foreplay, Ecstasy Hybrid required Kizuna to have sex with his partner for the hybrid. It was by far the strongest hybrid, but…

"I understand, but I don't think we should do it."

Kizuna voiced out during the strategy meeting and everyone looked at him, including Thanatos herself.

"Ah, don't misunderstand. I understand it would be better than any other hybrid and, as a man, I don't have any problems doing it with Thanatos, but I don't think we should do it just because of that."

Odin sighted and then said "if it was me instead of Thanatos, we'd just have sex and be done with everything. But anyway, what do you think, Thanatos?"

"W-well… I don't think Kizuna is wrong. If we did something like that on a whim, maybe we'd come to regret it later, o-or something like that."

Now it was Nayuta's turn to sigh and say "then, there's no point in forcing you two" to which Osiris followed with:

"I also agree with Kizuna and Thanatos, though it's not like it really concerns me. In any case, something on the level of a Heart Hybrid or Climax Hybrid should suffice, right? They'll be fighting together. There's no need to force them."

Thor then said "this is the first time I've seen a man reject the opportunity to have sex with a beautiful woman, but I'll say I appreciate the integrity. If you two had sex just to win a fight you'd probably regret it later" while Reiri and Kei just kept silent, but nodded in agreement.

That was how the idea of doing Ecstasy Hybrid was discarded and they opted for a normal Heart Hybrid instead.

"T-then, should we begin?"

"Y-yeah."

Kizuna didn't know why he was so nervous. It's not like it was his first time doing this, much less with a beautiful female. But even so, Kizuna was so nervous it was getting to Thanatos.

To try to calm himself, Kizuna started taking off his clothes until he left only his underwear on. He did that because that's how the Heart Hybrids usually went, but he then remembered it wouldn't be like that this time. Aine and the others made Kizuna badly accustomed!

But it did do something good. Seeing Kizuna in a half-naked state, Thanatos took the initiative.

"I-I guess I also have to take mine off."

Thanatos started taking off her dress. She did it slowly out of embarrassment, but to Kizuna it looked more like she was trying to seduce him.

Once she was done, she put her dress over where Kizuna put his clothes. Kizuna then got to take a good look at Thanatos in her underwear.

Both her panties and bra were pure white, but their design had a strange sex appeal to them. Even though Kizuna had caught even if just a glimpse of naked Thanatos at that time he happened to enter the bath when she was in, this look of hers made his heart skip a beat.

"I-I had already imagined we'd have to get like this, so I wore these just in case. It's not weird, right?"

"E-eh? N-no, it's fine."

Kizuna was still processing Thanatos' beauty. Sure, Aine, Hayuru, Yurishia, Grace, and all the others were beautiful in their own way, but Thanatos really did have a beauty that was worth being called a goddess, though Kizuna felt like the others wouldn't lose if they were to compete.

As a healthy male, Kizuna couldn't help but get excited. But Kizuna had to calm himself. His relationship with Thanatos was still new, but most of all he didn't want to damage it. But if she wanted to… no no, Kizuna had to calm down and get rid of such thoughts.

"Thanatos, I'm going to touch you. Is that ok?"

Thanatos nodded, so Kizuna started the Heart Hybrid.

He faked Thanatos out by making it seem like he was going to touch her breasts, but then moved his hands to her arms. Her skin was like silk and her arms were thin to the point Kizuna felt like he could snap them in half in he wasn't careful, but there was also some strange sexiness just from the situation they were in.

Then, Kizuna moved to Thanatos' thighs. She had plump thighs that made Kizuna want to use them as pillows. Thanatos voluntarily opened her legs after a few seconds, which allowed Kizuna to move to her inner thighs.

Kizuna massaged Thanatos' inner thighs. His fingers got close to her nether region, but never touched it. Thanatos was thinking that it was because Kizuna wanted to betray her expectations (which she didn't dislike), but actually Kizuna was just surprisingly nervous. It was like he regressed back to the time before he met Aine.

"Nn~ y-you're quite good. I guess it's only as expected."

"I've barely even started."

Kizuna then placed one hand on top of Thanatos' stomach, his other hand continued on her thigh. Kizuna played with Thanatos' belly button and also moved his hand close to her breasts and intimate place. In fact, at times, Kizuna even felt his fingers brush against a bush or lift Thanatos' breasts just a bit.

But of course, they couldn't stay like that forever. There was one line they had to cross if they hoped to make this Heart Hybrid a success.

Kizuna grabbed Thanatos' big breasts. She was still wearing her bra, but he could tell just how good they felt even like that.

"Thanatos, if you want me to stop, just say so."

"Mm, ok. But right now, I want you to keep going."

Kizuna groped Thanatos' breasts. They felt soft and nice to touch. They changed shapes like dough when Kizuna used his strength, but went back to their round shape as soon as he let go.

They might not be the biggest Kizuna had ever seen, but they were certainly amongst the top when feeling was concerned.

"Mm,nn~ K-Kizuna, I feel something coming."

If Kizuna could look bellow Thanatos right now, he would see a natural reaction forming. But even without that, Kizuna was starting to have trouble to hold back. Could it be the hybrid's side-effects already?

Kizuna started being more rough, but not to the point where Thanatos disliked it. In fact, she was moaning even louder now. As Kizuna kept massaging Thanatos' breasts and trying to tease her nipples through the bra, Kizuna placed kisses on Thanatos' neck bone.

"Mmm! Aaaa~ I-I-!"

Kizuna moved up as he kept placing kisses on Thanatos. He got to the point where he kissed her lower lip, but didn't let it evolve into a proper kiss. Well, it would be a good idea to do a Kisscharge Hybrid before the battle, so it's not like they wouldn't kiss sooner or later. Actually, they had already kissed once when Hypnos send the shadow gods, didn't they?

As Kizuna sucked on Thanatos' lower lip, Thanatos took that chance to suck on Kizuna's upper lip. From how she acted, Kizuna guessed she really wanted to kiss. Maybe she unexpectedly liked do kiss?

After sucking on Thanatos' lower lip, Kizuna plunged his face into her chest. Like that, he could use his mouth and tongue to play with those big things. Meanwhile, his hands let go of Thanatos' breasts and moved to her back.

He traced her backbone until her butt crack. Once there, Kizuna made a surprise attack to Thanatos' butt by grabbing and massaging them.

Thanatos couldn't resist the surprise attack and gave in.

"Aaaan! Mmmhh~!"

While Thanatos was tasting climax, they received confirmation of the Heart Hybrid's success. There was the usual lightshow, but also something new. Thanatos' pupils shined with a golden light while Kizuna's shined with a purple one.

If this was an Ecstasy Hybrid, they could say they were done right now. However, this was just a Heart Hybrid, so this was only the beginning.

After he waited for Thanatos to be done, Kizuna moved behind her. He thought about asking, but Thanatos beat him by offering first.

"Kizuna, help me take them off."

She said as she moved her golden hair from her back to the front. Kizuna didn't even have to ask what she meant. He unhooked her bra and she took it off. Kizuna then was unable to control himself and hugged Thanatos from behind by grabbing her bare breasts.

"Aahn~ Kizuna~"

"S-sorry. My head is a bit light. Is it the hybrid's side-effects? I've never felt them this strong. I'll stop-"

"No, you can keep going."

Hearing that, maybe something snapped inside Kizuna. He gave in to himself.

Kizuna groped Thanatos' naked breasts. They felt so nice to touch, he even teased the pink nipples. He couldn't see them because her hair was in the way, but that only made him more aroused.

Kizuna didn't mean it, but his hard part was rubbing against Thanatos' back. But she didn't dislike it, she was actually enjoying it. Just as Thanatos had said before, she wouldn't have minded it even if Kizuna said he wanted to do more than just Heart Hybrid.

Kizuna still had his boxers and Thanatos still had her panties. Maybe it felt unnatural to keep them on, but neither Thanatos nor Kizuna felt like it would be right to take them off. There was no need to, and they both didn't feel like their relationship was like that.

"Mmn~ Kizuna, like that~"

"Here?"

Although Kizuna had many sexual experiences until now, he still had to discover what Thanatos liked and disliked. How she liked to be touched, how strong, where. They were both having fun finding that out.

The more Kizuna played with Thanatos' breasts, the more her hair got out of the way and exposed them. Once Kizuna saw the white skin and pink nipples, he lost himself a bit more and launched an attack to Thanato's neck.

"Nn! You're going to leave a mark."

Kizuna kissed the back of Thanatos' neck. He sucked on it as if leaving his mark was his intention. Of course, he didn't stop his hands. Being attacked in two placed was making Thanatos approach climax once again.

Kizuna was still unknowingly using his hard part against Thanatos. If he didn't keep his underwear on, Kizuna was sure he would have already shot his load.

So, while he still had even just a little bit of his mind left, he had to make Thanatos climax.

"Kizu,naaaaa!"

The already soaked panties gave up and let Thanatos' juices through. Even the bed sheets could barely handle them.

Another Heart Hybrid was successful. However, this time Thanatos didn't waste a second and pushed Kizuna down. On her eyes, he could see she was taken by the hybrid's side-effects, much like himself.

"Kizuna~ I want more."

Thanatos said as she kept kissing Kizuna's face. Now that she was taken by lust, her voice was sweeter than honey. And, going by the amounts of kisses she was giving, Kizuna felt like it was safe to assume Thanatos liked to kiss.

She kept kissing Kizuna all over his body. She kept going down on his body, kissing his chest and abdomen. She was getting dangerously close to his lower body, so Kizuna had to stop her.

If it was Kizuna right now he wouldn't think twice about doing Ecstasy Hybrid. He wanted to keep kissing Thanatos as entered her special place and took them both to the heavens. This was by far the strongest Kizuna had ever felt the hybrid's side-effects. However, even if just a tiny spec of Kizuna's mind remained, so he was able to stop Thanatos.

"Wait, I have a better idea."

Thanatos stopped what she was doing and looked at Kizuna. Thanatos' mind was just as blank as Kizuna, so she would do anything if she was told it felt good, just like Kizuna. The difference was that Kizuna was able to resist even if just a little. Kizuna told her where to stay, so she did.

Thanatos's breasts were on top of Kizuna's face. He didn't lose a second to start sucking and licking on them. It couldn't be said he looked like a baby, he really just seemed like a pervert sucking on her breasts.

"Aaah! Kizuna!"

Thanatos moaned as Kizuna kept up his mouth services. Not just sucking and licking, he also bit and teased Thanatos' breasts and nipples to his heart's content.

Kizuna also used his hand on Thanatos' lower body. Even he didn't notice, but he put his hands inside Thanatos' panties so that he could touch her directly.

He played with her big ass and even got close to touching places he shouldn't. Her breasts were also sending waves of pleasure to her brain.

Under the hybrid's side-effects and still a little sensitive from the climax just now, Thanatos was nearing her third climax.

"Mmh! Kizuna, I feel like my head is going to go blank."

But even Kizuna was too far gone to care about that. He just kept doing what he was doing, and it all soon paid off. Another Heart Hybrid was successfully completed, or maybe this was already in the realm of Climax Hybrid.

"Aaaaaaaa!"

This time, there were enough juices to wet not only Thanatos herself, but even Kizuna under her. Both Kizuna's trousers and Thanatos' panties were so wet they couldn't be worn anymore.

Would this be any other scenario, they would just take these off. But, as things were right now, they chose to keep them on.

Then, they waited until Thanatos recovered and also until the hybrid's side-effects wore off. If they just kept going, they would end up having sex right then and there, so they took a breather.

After they were both ready, they did even more Heart and Climax Hybrids, even to the point where they cut it close sometimes.

Then, well deep into the night, they decided to rest so that they could battle Hypnos on the day after. Maybe still a little drunk under the hybrid's side-effects, Thanatos gave Kizuna a kiss on the cheek.

"Good night. It was great."

"T-thanks? Good night to you as well."

Kizuna decided to play along and also kissed Thanatos' cheek. She thought he didn't see it, but Kizuna noticed Thanatos' face getting redder.

Then, they went to sleep so they could fight another day.