The summoning chamber was charged with an air of anticipation as Ritsuka stood in the center, Mashu by his side and Director Olga Marie overseeing the proceedings from a distance. Ritsuka was fidgeting with excitement, his mind racing with possibilities of which Heroic Spirit would answer his call.

Mashu, ever the calm and collected Senpai, observed Ritsuka with a gentle smile. "Are you nervous, Senpai?"

Ritsuka grinned nervously. "Just a bit, Mashu. I mean, this is our first summoning. Who knows who we'll get?"

Olga Marie, standing with her arms crossed, rolled her eyes impatiently. "Honestly, Ritsuka Fujimaru, can you please just get on with it? We don't have all day for your ridiculous speculations."

Ritsuka turned to Olga with a sheepish grin. "Sorry, Director. It's just... I can't help but wonder, you know? What if it's King Arthur? Or maybe Heracles? Wouldn't that be something?"

Mashu chuckled softly. "Senpai, I think you're aiming quite high with those guesses."

Olga Marie scoffed. "King Arthur? Heracles? Do you really think such legendary Heroic Spirits would deign to answer a Master's call so easily?"

Ritsuka scratched his head, undeterred. "Well, you never know, right? Maybe they're up for a challenge."

As the trio bantered, the summoning circle beneath Ritsuka glowed brighter, signaling the imminent arrival of a Heroic Spirit. Ritsuka's heart raced as the magical energies swirled around him.

"I hope it's someone strong," Ritsuka muttered, more to himself than anyone else.

Mashu reassured him softly, "Whoever it is, we'll do our best, Senpai."

Suddenly, the chamber filled with a blinding light, and a figure began to materialize within the summoning circle. Ritsuka held his breath, his eyes fixed on the form taking shape before him.

As the light faded, standing before Ritsuka was a figure clad in armor, wielding a mighty sword. It was none other than...

Ritsuka's eyes widened in disbelief. "Is that...?"

Mashu looked at the newly summoned Servant with a mix of surprise and curiosity. "It's not King Arthur, Senpai."

Olga Marie smirked, unable to resist a jab. "Clearly."

Ritsuka blinked rapidly, trying to process the reality before him. "But... I thought maybe... I mean..."

The armored figure spoke in a deep, resonant voice. "I am Siegfried, Saber-class Servant. I have answered your summons, Master."

Ritsuka managed a weak smile. "Siegfried... Nice to meet you. I'm Ritsuka Fujimaru."

Siegfried nodded, his expression calm yet determined. "I pledge my sword to you, Master Fujimaru. Wherever you lead, I shall follow."

Mashu stepped forward, bowing respectfully. "Welcome, Siegfried. We're honored to have you as our Servant."

Olga Marie clapped sarcastically. "Well, congratulations, Ritsuka. You didn't get King Arthur, but you did get someone who looks like they could handle a dragon or two."

Ritsuka chuckled nervously, feeling a mix of relief and embarrassment. "Yeah, dragons... right."

Siegfried regarded Ritsuka with a hint of amusement. "Do not worry, Master Fujimaru. With me by your side, we shall face whatever challenges come our way."

Mashu smiled warmly at Ritsuka. "It's a good start, Senpai. Let's work together with Siegfried and continue our journey."

Ritsuka nodded, feeling a surge of determination. "Right. Let's do this, Siegfried."

The next day dawned with renewed anticipation in Chaldea. Ritsuka, Mashu, Olga Marie, and Siegfried gathered once again in the summoning chamber. Ritsuka was determined this time, his hopes high for a powerful Servant to join their ranks.

Standing before the summoning circle, Ritsuka glanced at Mashu with a confident smile. "I have a good feeling about today, Mashu. Maybe we'll summon someone really strong."

Mashu nodded encouragingly. "I'm sure we'll find a great ally, Senpai. Let's see who answers your call."

Olga Marie, standing off to the side with her arms crossed, couldn't resist needling Ritsuka once more. "Oh, I'm sure you're just brimming with confidence now, Fujimaru. But let's not get ahead of ourselves. You're still a novice mage, after all."

Ritsuka shrugged off Olga's remark with a grin. "Well, everyone starts somewhere, right? Maybe today's the day I surprise you, Director."

Olga scoffed. "Surprise me? With your luck, you'll probably summon another mid-tier Servant at best."

Ritsuka chuckled, though a hint of irritation flickered in his eyes. He glanced at Siegfried, who stood stoically beside him. "What do you think, Siegfried? Any guesses on who might answer our call today?"

Siegfried's gaze was steady. "The identity of the Heroic Spirit that appears is determined by fate, Master Fujimaru. We must be prepared for whatever comes."

Ritsuka nodded thoughtfully, then turned back to the summoning circle as it began to glow with magical energy once more. His heart raced with anticipation as he imagined the possibilities of who might appear.

Mashu watched with a mix of excitement and concern. "Stay focused, Senpai. Remember, the strength of a Servant isn't just in their power, but in how we work together."

Ritsuka nodded, his eyes fixed on the swirling lights within the summoning circle. "Right, Mashu. We're a team, after all."

Suddenly, the chamber was filled with a brilliant light, and a figure started to materialize within the summoning circle. Ritsuka held his breath, his pulse quickening with each passing moment.

As the light faded, a tall, imposing figure stood before them, clad in elegant armor and exuding an aura of undeniable strength and charisma.

Ritsuka's eyes widened in awe. "Is that...?"

Mashu gasped softly. "It's a Lancer-class Servant, Senpai."

Olga Marie raised an eyebrow, her skepticism evident. "Hmph, not bad. But still far from top-tier, I'd say."

The Lancer spoke with a commanding voice. "I am Cu Chulainn, the Hound of Ulster. I have answered your call, Master."

Ritsuka couldn't contain his excitement. "Cu Chulainn! It's an honor to meet you. I'm Ritsuka Fujimaru."

Cu Chulainn nodded solemnly. "The honor is mine, Master Fujimaru. Together, we shall face any challenge that lies ahead."

Mashu smiled warmly. "Welcome, Cu Chulainn. We look forward to fighting alongside you."

Olga Marie muttered under her breath, "Well, well. Look who managed to summon someone with a bit more potential this time."

Ritsuka shot Olga a playful smirk. "See, Director? Maybe I'm not such a rookie after all."

Olga rolled her eyes, though a faint smile tugged at her lips. "Don't get too cocky, Fujimaru. You've still got a long way to go."

The atmosphere in the summoning chamber was tense yet hopeful as Ritsuka, Mashu, Olga Marie, Siegfried, and Cu Chulainn stood once again before the summoning circle. Ritsuka was determined to summon a Servant who could potentially elevate their team's strength, though he was mindful of not offending Siegfried and Cu, who had already proven their worth.

"I've got a good feeling about today," Ritsuka said with a confident smile, glancing at Mashu for reassurance.

Mashu returned his smile warmly. "I'm sure we'll find another great ally, Senpai. Let's see who answers your call this time."

Olga Marie, leaning against the wall with a skeptical expression, couldn't resist teasing Ritsuka once more. "Oh, of course you do, Fujimaru. Dreaming of a top-tier Servant, are we? Let's see how that works out for you."

Ritsuka shrugged off Olga's remark, his optimism undimmed. "Hey, you never know until you try, right?"

Cu Chulainn chuckled, twirling his spear absentmindedly. "Maybe my old hag teacher will answer your call, Ritsuka."

Ritsuka laughed nervously. "Let's hope not, Cu. I don't think I'm ready for that lecture again."

Mashu interjected gently, "It's highly unlikely to summon Servants of the same class consecutively, Cu Chulainn. So, we can expect a different class this time."

Siegfried nodded in agreement. "Indeed, the summoning system tends to balance the classes of the Heroic Spirits it calls forth."

As they bantered, the summoning circle began to glow once more, casting a soft light across the chamber. Ritsuka's heart raced with anticipation, wondering who would join their ranks next.

The magical energies swirled and coalesced, forming the shape of a new Servant. As the light faded, a figure clad in intricate robes and wielding a staff stood before them.

Ritsuka blinked in surprise. "A Caster-class Servant?"

Mashu nodded, her eyes wide with curiosity. "It seems so, Senpai."

The Caster smiled warmly, her voice gentle yet filled with authority. "I am Medea, Caster-class Servant. I have answered your call, Master."

Ritsuka bowed respectfully. "Welcome, Medea. I'm Ritsuka Fujimaru. It's an honor to meet you."

Medea inclined her head gracefully. "The honor is mine, Master Fujimaru. I shall lend you my magical prowess in the battles to come."

Olga Marie crossed her arms, studying Medea with a critical eye. "Hmm, not bad. A Caster could be useful, I suppose."

Ritsuka grinned triumphantly at Olga. "See, Director? I told you I had a good feeling today."

Olga Marie rolled her eyes. "Don't let it get to your head, Fujimaru. Luck can change as quickly as it comes."

Cu Chulainn chuckled. "At least it's not my old hag teacher, right, Ritsuka?"

Ritsuka laughed along with Cu Chulainn, feeling a sense of relief and excitement at the addition of Medea to their team. "That's true, Cu. Though I'm sure she'd have some valuable lessons for us."

Mashu smiled warmly at the group. "With Medea's abilities, our team is becoming more versatile. Let's continue to work together and grow stronger."

Excitement crackled in the air of the summoning chamber as Ritsuka, Mashu, Olga Marie, Siegfried, Cu Chulainn, and Medea gathered once more before the glowing summoning circle. Ritsuka was especially fired up today, a sense of anticipation coursing through him as he hoped for another powerful addition to their team.

"I've got a really good feeling about today," Ritsuka declared with a confident grin, his eyes gleaming with determination.

Mashu smiled warmly. "I'm sure we'll summon someone amazing, Senpai. Let's see who answers your call."

Olga Marie leaned against the wall, arms crossed, a smirk playing on her lips. "Oh, do you now, Fujimaru? Feeling lucky today, are we?"

Ritsuka chuckled, undeterred by Olga's teasing. "Absolutely, Director. Today's the day we get an awesome Servant."

Cu Chulainn twirled his spear with a grin. "Maybe you'll summon a Berserker this time, Ritsuka. Imagine the chaos."

Medea chuckled softly. "Or perhaps an Archer to balance the team's composition."

Siegfried nodded solemnly. "Regardless of class, we must be prepared for any Heroic Spirit that answers the summoning."

As they bantered, the summoning circle began to glow brighter, casting an intense light around the chamber. Ritsuka's heart raced with anticipation, his eyes fixed on the swirling energies.

The light intensified, and from within the summoning circle emerged a figure cloaked in shadows. As the light faded, the silhouette solidified into a catlike, elegant figure with a bow slung across her back.

Ritsuka's eyes widened in awe. "An Archer-class Servant!"

Mashu gasped softly. "It's incredible, Senpai."

The Archer approached them with a calm demeanor, their presence exuding strength and confidence. "I am Atalanta, Archer-class Servant. I have answered your call, Master."

Ritsuka couldn't contain his excitement. "Atalanta! Welcome. I'm Ritsuka Fujimaru."

Atalanta smiled warmly. "The pleasure is mine, Master Fujimaru. I shall lend you my skills in the pursuit of justice."

Olga Marie raised an eyebrow, her smirk widening. "Well, well, Fujimaru. Looks like your luck held out this time."

Ritsuka grinned broadly at Olga. "Told you so, Director. We've got quite the team now, don't we?"

Cu Chulainn chuckled. "A fine addition indeed, Ritsuka."

Medea nodded in agreement. "With Atalanta's abilities, our team's versatility in combat will increase."

Mashu clapped her hands together excitedly. "Let's continue to support each other and grow stronger together, everyone."

The atmosphere in the summoning chamber was charged with anticipation as Ritsuka, Mashu, Olga Marie, Siegfried, Cu Chulainn, Medea, and Atalanta gathered around the summoning circle. This was the final day for Ritsuka to complete his lineup of Servants, and he was determined to summon someone who would complement their team perfectly.

Ritsuka stood with a mixture of excitement and nerves, glancing at his assembled Servants with a smile. "Today's the day, everyone. Let's see who joins us next."

Mashu nodded encouragingly. "I'm sure we'll find the perfect ally, Senpai. Let's hope for someone who can strengthen our bonds even further."

Olga Marie couldn't resist a teasing remark. "Well, Fujimaru, let's see if your rookie's luck has finally run out. Maybe you'll summon a third-rate Servant this time."

Ritsuka chuckled, undeterred by Olga's jab. "Hey, you never know, Director. Maybe today's the day I surprise you again."

Cu Chulainn grinned mischievously. "Perhaps you'll summon a Rider this time, Ritsuka. Imagine charging into battle on horseback."

Medea smiled softly. "Or maybe a Saber to bolster our front lines."

Siegfried nodded thoughtfully. "Regardless of class, our goal remains the same: to fight for the future of humanity."

With their banter filling the chamber, the summoning circle began to glow once more, its light casting a mesmerizing glow around them. Ritsuka's heart raced as he awaited the arrival of their final Servant.

The magical energies coalesced and formed the outline of a new figure within the summoning circle. As the light dimmed, a tall, regal figure in elegant armor stood before them.

Ritsuka blinked in surprise. "A Saber-class Servant?"

Mashu gasped softly. "It seems so, Senpai."

The Saber approached them with grace and dignity, their presence commanding respect. "I am Artoria Pendragon, Saber-class Servant. I have answered your call, Master."

Ritsuka's eyes widened in awe. "Artoria Pendragon! It's an honor to meet you. I'm Ritsuka Fujimaru."

Artoria nodded solemnly. "The honor is mine, Master Fujimaru. I shall wield my sword in service to our cause."

Olga Marie raised an eyebrow, a hint of surprise in her expression. "Well, I must admit, Fujimaru. You've managed to summon quite the legendary figure this time."

Ritsuka grinned proudly. "I guess my luck hasn't run out just yet, Director."

Cu Chulainn chuckled. "Looks like we've got ourselves a real knight, Ritsuka. This should make things interesting."

Medea nodded in approval. "Artoria Pendragon's presence will greatly bolster our combat capabilities."

Mashu clasped her hands together, her eyes shining with admiration. "With Artoria by our side, our team feels complete."